Views: 0 Author: Site Editor Publish Time: 2026-03-06 Origin: Site
You need to choose the right type, material, and certification for your heavy-duty hardware. Make sure it fits your security needs, door type, and the place where you will use it. Certified heavy-duty door bolts keep your building safe and help you follow safety rules. D&D Hardware has strong options for warehouses and other big buildings. Look for certifications like ANSI/BHMA, UL, and CE. These show the bolts are strong and safe. Check the table below to see common certifications:
Standard / Certification | Applicable Sector | Key Benefits |
|---|---|---|
ANSI/BHMA Grade 1 | Commercial & Institutional Buildings | Very strong and hard to break for busy doors. |
UL 437 | Banks, Data Centers, Government Facilities | Hard to pick, drill, or break for over 10 minutes. |
EN 12209 | International Commercial Use | Class 6 means it lasts long and is very strong. |
SDS | UK & EU Police-Recommended Security | Helps stop break-ins and keeps places safer. |
Find suppliers offering heavy-duty door bolts for warehouses and commercial properties. Think about what you need before you pick your hardware.
Pick heavy-duty door bolts that fit your security needs. Think about your door type and where it is. This helps keep your property safe.
Find bolts with certifications like ANSI/BHMA, UL, or CE. These show the bolts are strong and safe for your business.
Choose the right bolt for your door. Use slide bolts for metal doors. Use deadbolts if you need more security. Use flush bolts for wooden doors.
Check what the bolts are made of. Stainless steel lasts long and does not rust. Brass looks nice and shiny.
Measure your doors carefully before you buy bolts. This makes sure the bolts fit and you do not have problems installing them.
Get ready to install by gathering tools you need. Decide if you will do it yourself or call a professional for hard jobs.
Look for bolts that can handle bad weather. This helps your bolts last longer and need less fixing.
Make a checklist to help you pick bolts. Write down your door type, grade, certifications, and how to install. This helps you choose the best heavy-duty hardware.
Businesses need strong doors to stay safe. Heavy-duty hardware makes doors harder to break. Security bolts add extra strength to your doors. They help stop people from forcing their way in. These bolts are tough and keep out unwanted visitors.
Heavy-duty door bolts can work with alarm systems. You can build a layered security plan for your property.
Multi-point locking options make doors stronger. The best bolts hold the door at more than one spot.
You can use heavy-duty hardware on steel or aluminum doors. These materials are common in big buildings. The bolts last a long time and keep working well.
High-quality security bolts protect your business, your workers, and your things.
Heavy-duty hardware does more than keep your building safe. It helps your business run better every day. You can secure big sliding doors with strong sliding bolts. These bolts are reliable, so you do not worry about them breaking.
High-quality security bolts handle lots of use. They work well in busy places where doors open and close often.
Security bolts help protect valuable items and equipment. You lower the risk of theft or damage, so your work is not interrupted.
Using the best security bolts makes your workplace safer and more efficient.
You want to save money over time. Heavy-duty door bolts help you do that. Their strong design means you do not replace them often. You spend less on repairs and new hardware. High-quality security bolts keep working, even with lots of use. This helps you avoid extra costs and keeps your property safe for years.
Tip: Buying heavy-duty hardware now can save money later. You get strong security and fewer maintenance problems.
Heavy-duty hardware gives your business the best value. You get strong security, smooth operations, and lower costs.
You need strong hardware for heavy-duty doors in commercial spaces. Slide bolts work well for metal doors. These bolts use a simple sliding mechanism. You push the bolt into a catch to lock the door. Slide bolts give you quick access and easy locking. You can use them in warehouses, factories, and storage rooms. The design makes them reliable for high-traffic areas.
Slide bolts are easy to install. You mount them on the surface of the door. You do not need to cut into the door. This saves time and keeps the door strong. Many heavy-duty slide bolts use stainless steel. Stainless steel resists rust and corrosion. You get long-lasting security and smooth operation.
Tip: Choose slide bolts with a thick barrel and sturdy catch for extra security. This helps protect your property from forced entry.
Deadbolts offer the highest level of security for commercial properties. You use deadbolts when you need heavy-duty hardware that can withstand force. These bolts lock the door with a solid metal bar. You turn a key or knob to move the bolt into the door frame. Deadbolts are common in offices, retail stores, and secure rooms.
You can find single-cylinder and double-cylinder deadbolts. Single-cylinder deadbolts use a key on one side and a knob on the other. Double-cylinder deadbolts use a key on both sides. Double-cylinder options add extra security. You prevent intruders from unlocking the door by breaking glass or panels.
Deadbolts work best on solid doors. You should use them on metal or reinforced wooden doors. Look for deadbolts with certifications like UL or ANSI. Certified deadbolts meet strict security standards. You get peace of mind knowing your hardware protects your business.
Flush bolts are a smart choice for wooden doors in commercial settings. You install flush bolts by cutting a pocket into the door. The bolt sits inside the door edge. This creates a hidden locking mechanism. Flush bolts keep the door secure without showing hardware on the surface.
You often use flush bolts on double doors. One door stays fixed with the flush bolt, while the other opens and closes. Flush bolts are popular for fire-rated doors and conference rooms. They help you meet safety codes and provide strong security.
Flush bolts come in different materials. Stainless steel flush bolts resist corrosion and last longer. Brass flush bolts add style and shine to your doors. You can choose the type that fits your needs and matches your door design.
Here is a quick comparison of common types of door bolts for commercial properties:
Bolt Type | Best For | Installation | Security Level |
|---|---|---|---|
Slide Bolt | Metal Doors | Surface Mounted | High |
Deadbolt | Solid Doors | Inset/Surface | Very High |
Flush Bolt | Wooden Double Doors | Pocket Cut | High |
You can select the right heavy-duty hardware based on your door material and security needs. Each type of door bolt offers unique benefits for commercial properties.
Electronic bolts let you control your doors in a smart way. You use these bolts when you want more safety and easy entry. Electronic bolts can work with keypads, cards, or remotes. You can lock or unlock the door by pressing a button. This makes your doors easier to use and safer.
Many businesses use electronic bolts. Offices, warehouses, and hospitals use them to keep special rooms safe. Electronic bolts help you decide who can go in or out. You can give access to some people and block others. This keeps your building safe and secure.
Heavy-duty electronic bolts work on metal and wooden doors. You can put them on fire-rated doors or doors that need extra strength. These bolts are made from strong materials like stainless steel. The hardware does not break easily. It works well even if lots of people use the door.
Here are some good things about electronic bolts for your doors:
You can use codes or cards to open the door.
You can lock or unlock the door from far away.
You get a warning if someone tries to break in.
You can connect electronic bolts to alarms.
Note: Electronic bolts make your security system better. You can see who uses each door and fix problems fast.
Electronic bolts are part of your safety plan. You can use them with other bolts for more protection. For example, you might use a slide bolt for basic safety and an electronic bolt for more control. This gives you more ways to keep your building safe.
You need to pick electronic bolts that fit your door. Some bolts are best for metal doors. Others work better on wooden doors. Check the size and strength before you put them in. Make sure your electronic bolts have safety marks like UL or CE. Certified bolts help you feel safe.
Here is a table to compare electronic bolts with other bolts:
Bolt Type | Access Method | Best For | Security Level |
|---|---|---|---|
Electronic Bolt | Code/Card/Button | Offices, Warehouses | Very High |
Slide Bolt | Manual | Metal Doors | High |
Deadbolt | Key/Knob | Solid Doors | Very High |
Flush Bolt | Manual | Wooden Doors | High |
Electronic bolts help you make your building safer. You get strong doors, easy entry, and good protection for every room.
You should check certification standards before picking heavy-duty hardware. Certifications show that security bolts are strong and safe. These rules help you compare bolts and pick the best one. Certified hardware helps you feel sure your doors will stay safe.
Look for heavy-duty hardware with UL, CE, ANSI, or BHMA certifications. These groups test bolts to make sure they are tough. ANSI and BHMA use grades to show how strong bolts are. Grade 1 is the strongest and lasts the longest. Grade 2 is strong but not as tough as Grade 1. Grade 3 is not good for main security. The table below explains these grades:
Certification Type | Grade | Description |
|---|---|---|
ANSI | 1 | Best security and durability for commercial properties. |
ANSI | 2 | Strong and good for homes or light commercial use. |
ANSI | 3 | Not very strong, not good for main security. |
BHMA | 1 | Best lock, highest security and durability. |
BHMA | 2 | Durable but not as strong as Grade 1. |
BHMA | 3 | Works but not good for main security. |
UL and CE certifications mean hardware meets fire safety and world standards. You get safe and secure doors for your business.
Warehouses need bolts with the right certifications. Certified hardware keeps valuable things safe and protects workers. You follow building rules and avoid fines. Certified bolts last longer in busy places. Picking certified bolts shows you care about safety and security for your business.
Think about material strength when picking heavy-duty hardware. Stainless steel, brass, and alloy steel are common choices. Stainless steel does not rust and is very strong. Brass is easy to shape and looks nice. Alloy steel is extra strong for tough jobs. The table below compares these materials:
Metal | Advantages | Disadvantages |
|---|---|---|
Brass | Looks good, easy to shape, resists some rust | Not very strong, can rust, costs more |
Stainless Steel | Does not rust, strong and lasts long | Can scratch easily, does not conduct heat well |
Alloy Steel | Very strong, good for tough hardware | Needs extra care to stop rust |
Pick bolts that do not rust and last a long time. Stainless steel and brass resist rust well. Hardware made from these metals works great in warehouses and other big spaces. You get strong bolts and good protection for your doors.
Match the bolt material to your security needs. Use stainless steel for busy areas and strong protection. Brass is good for doors where style matters. Alloy steel is best for bolts that need extra strength. Comparing bolt features helps you pick the right material for your property.
Check if your hardware fits your door type. Metal doors need strong locks and hinges. Wooden doors need hardware that matches their size and look. Composite doors need bolts that work with their special build. You get better safety when you use the right hardware.
Pick the right size bolt for your door. Measure your door and choose hardware that fits well. Big doors need bigger bolts for strength. Small doors need bolts that do not damage the frame. The right size keeps your doors strong and safe. You avoid problems and protect your property.
Tip: Always measure your door before buying bolts. This helps you pick the best hardware for your security needs.
You need to think about the tools and skills before you start the installation of heavy-duty hardware. Some heavy-duty door bolts are simple to put in place. Surface-mounted bolts and slide bolts are good choices if you want an easy job. You only need basic tools like a screwdriver, drill, and measuring tape. These bolts work well for people who like to do things themselves.
Other types of heavy-duty hardware, such as drop bolts and flush bolts, need more advanced skills. You may have to cut into the door or frame. This job can require special tools and a steady hand. If you do not have experience with these tasks, you might find it hard to get the bolt to fit right. Always check the instructions before you start.
Tip: Gather all your tools before you begin. This helps you finish the job faster and avoid mistakes.
You have two main choices for installing heavy-duty hardware. You can do it yourself or hire a professional. If you pick surface-mounted or slide bolts, you can often handle the job on your own. These bolts are made for easy installation. You save money and learn how to install a door bolt by yourself.
If you choose heavy-duty security bolts like flush bolts or drop bolts, you may want to call a professional. These bolts need careful measuring and cutting. A skilled installer knows how to install a door bolt without damaging the door. You get a strong fit and better security.
Think about your skills and the type of door you have. If you feel unsure, a professional can help you avoid problems.
You may face some challenges when working with heavy-duty hardware. Here are some common problems:
The bolt does not line up with the strike plate.
The door material is too hard or thick for your tools.
The bolt is too big or too small for the door.
The instructions are hard to follow.
You can solve many of these problems by measuring carefully and reading the guide. Always check the fit before you drill any holes. If you run into trouble, ask for help from a hardware expert.
Note: Good installation helps your security bolts work well and last longer. Take your time and do each step with care.
When you look at the factors to consider when choosing a door bolt, remember that easy installation saves you time and stress. You get better results when you match your skills to the job. Heavy-duty hardware gives you strong security, but only if you install it the right way.
Start by thinking about how much security your warehouse needs. Every building faces different risks. Some warehouses keep valuable items safe. Others protect equipment or important papers. You must decide how strong your security bolts should be. Look at each entry point and see which doors need more protection. Heavy-duty hardware works best for main doors, loading docks, and storage rooms.
You can use a guide to help you figure out what you need. Ask yourself these questions:
What items do you want to keep safe?
How many people use the doors every day?
Do you need to follow any safety rules or certifications?
Are there places that need extra heavy-duty security?
Security bolts with certifications like UL, CE, or ANSI help you feel safe. You know your doors will stay locked and secure. Heavy-duty hardware helps stop break-ins and keeps your warehouse safe.
Tip: Make a list of your security needs before picking a door bolt. This helps you focus on the most important spots.
You must measure your doors carefully before buying heavy-duty hardware. Accurate measurements help you avoid problems during installation. Measure the width of your door in several places. Use the smallest measurement to make sure the door fits well. This step stops misalignment and keeps your doors working smoothly.
Check the thickness and height of each door. Heavy-duty security bolts must match the size and material of your doors. If you have metal doors, you need bolts that can handle extra weight. Wooden doors need bolts that fit the frame and do not damage the wood. Composite doors need hardware that works with their special build.
You should also check if your hardware fits your doors. Make sure the security bolts match the door type and frame. Look at the manufacturer's guide for each product. D&D Hardware gives a step-by-step installation guide to help you pick the right door bolt. You can ask for help if you have questions about compatibility.
Note: Careful measurements and compatibility checks help you avoid installation issues. You get a strong fit and reliable security for your warehouse.
You need to compare different bolt types and materials to find the best heavy-duty hardware for your warehouse. Each bolt type has special features. Slide bolts work well for metal doors. Deadbolts give extra security for solid doors. Flush bolts are good for wooden double doors. Electronic bolts let you control access in a smart way.
You must look at the material of each bolt. Heavy-duty bolts use strong metals like stainless steel, brass, or alloy steel. Stainless steel does not rust and lasts longer. Brass looks nice and works well for less busy doors. Alloy steel gives extra strength for tough jobs.
Use this guide to compare bolt types and materials:
Criteria | Description |
|---|---|
Material Type | Different materials like high tensile steel and carbon steel affect strength and durability. |
Load Capacity | Load capacities vary by bolt type, showing if they fit different uses. |
Design Features | Design changes (like shouldered or not) affect how much load they can handle. |
Environmental Considerations | Resistance to rust and ability to handle tough conditions are important for warehouses. |
You should also check:
If the material fits your application
Strength shown by the fastener's grade
Size and length for stability
Resistance to moisture and temperature extremes
Heavy-duty hardware gives you strong protection and lasts a long time. Security bolts with the right material and design keep your warehouse safe. You can use a guide to compare options and make the best choice.
Tip: Always compare bolt types and materials before picking a door bolt. This step helps you find heavy-duty hardware that meets your security needs.
You should check what you need before you buy heavy-duty hardware. This helps you avoid problems and makes sure your door bolt works right. First, look at how strong your door is. A strong door gives you better safety. If your door is weak, even the best hardware will not keep your building safe.
Different places need different levels of security. A store might only need basic protection. Hospitals or warehouses need the best security. Heavy-duty locking systems make doors much safer. You should pick the right grade for your needs. The table below shows what each grade means for safety and strength:
Grade | Description |
|---|---|
3 | Basic safety and security standards. |
2 | Medium security, meets BHMA rules. |
1 | Best security and strength, top quality. |
You also need to think about the tools and skills for installation. Some hardware is easy to put in with simple tools. Other types need special tools or a pro to help. Always read the instructions before you start. If you are not sure, ask D&D Hardware for help. Their team can give you guides or tell you who can install it for you.
Here are some steps you should follow:
Check what your door is made of and how thick it is.
Pick the right grade of hardware for your safety needs.
Get all your tools ready before you start.
Read the instructions all the way through.
Ask for help if you do not understand something.
Tip: Good installation keeps your hardware working for a long time. Go slow and make sure you do each step right.
You need to think about weather when you pick heavy-duty hardware. Many warehouse doors face rain, sun, or snow. If your door bolt cannot handle bad weather, it might rust or stop working. You want your hardware to last for years, even in tough weather.
Look for things that help your door bolt fight weather. Stainless steel does not rust and is a good choice. Galvanized steel is good for covered places that still need protection. Some hardware has special finishes that hide scratches and keep bolts looking new.
The table below shows what to look for in weather-resistant hardware:
Feature | Description |
|---|---|
Weather Resistance | Sealed bearings and special finishes help bolts last longer outside. |
Material Composition | Stainless Steel: Does not rust, great for outside doors. |
Galvanized Steel: Cheaper, has a zinc coat, good for covered spots. | |
Maintenance Requirements | Needs little care, sealed parts and self-oiling pieces work well in hard-to-reach places. |
Surface Finishes | Matte or satin finishes hide marks better than shiny ones in busy areas. |
You should also think about how much care your hardware needs. Some bolts need almost no care. Sealed bearings and self-oiling parts help bolts work well, even if you cannot reach them often. Pick a finish that looks good in your warehouse. Matte or satin finishes hide scratches and keep hardware looking nice.
If you need help picking weather-resistant hardware, ask D&D Hardware for advice. They have many choices and can help you find the best one for your doors.
Note: Weather-resistant hardware saves you money and time. You get strong safety and do not have to worry about fixing bolts often.
You need to find companies that sell heavy-duty door bolts for big buildings and warehouses. D&D Hardware is a good choice because they know a lot about hardware. They check their products carefully and sell them all over the world. You can get many kinds of strong hardware from them. D&D Hardware sells security bolts, hinges, and smart locks for different doors. Their customer service is helpful and they care about safety.
Here is a quick list of why D&D Hardware is a great pick:
Feature | Description |
|---|---|
High-Quality Manufacturing | D&D Hardware uses new ways to make hardware and checks quality. |
Extensive Product Range | They have many types of hardware, like strong hinges and smart locks. |
Compliance with International Standards | Their products are tested to meet safety and strength rules from around the world. |
Strong Customer Support | They help you keep your building safe and make sure things work well. |
You can count on D&D Hardware to give you strong hardware for your warehouse or business.
When you look for companies selling heavy-duty door bolts, you should check for certifications and quality checks. Certified bolts help you feel safe. You know the hardware is strong and follows safety rules. D&D Hardware tests their products to meet world standards. You will see marks like ANSI/BHMA, UL, CE, and fire rating on their hardware.
Here is a table that explains what these marks mean:
Certification Type | Description |
|---|---|
ANSI/BHMA | Checks if the hardware is strong and safe |
UL | Shows the product is safe and works well |
CE | Means the hardware meets European rules |
Fire Rating Certification | Says you can use it on fire doors |
ADA Compliance | Makes sure everyone can use the door |
You should always look for these marks when you buy bolts. Certified hardware keeps your warehouse safe and your doors strong.
You need companies that do more than just sell products. D&D Hardware lets you change things to fit your needs. You can ask for your own logo on big orders. You can pick finishes like matte black, satin nickel, antique brass, or stainless steel. D&D Hardware also helps with special orders through OEM and ODM services. You get new ideas, good quality, and help from start to finish.
You can get your logo on big orders
Many finishes to match your style
OEM and ODM for special needs
Help from picking products to putting them in
You can find companies that sell heavy-duty door bolts and help you every step of the way. D&D Hardware gives you advice and strong hardware. You get safe bolts, easy setup, and doors that stay protected.
Tip: Pick companies that sell certified bolts, let you customize, and give good support. This makes your warehouse safer and your doors stronger.
You need to check if your hardware fits your door. Many people pick bolts that do not match their door type. Metal doors and wooden doors need different bolts. Using the wrong bolt can make your door weak. Always check if the bolt matches your door’s material and weight.
Match bolts to your door type. Metal doors need strong bolts. Wooden doors need bolts that fit the frame.
Use screws and hinges made for your door material. This stops bolts from failing or not lining up.
Think about how your door moves. Some doors swing, others slide. Pick bolts that work with your door’s movement.
Fire-rated doors need special bolts. Make sure your bolts meet fire safety rules.
If you follow these steps, you keep your security strong and avoid problems.
You must check if your hardware has the right certifications. Many people forget this step and buy bolts that are not safe. Certified bolts help you feel safe. They show your hardware is tested for strength.
Here are mistakes you should avoid:
Picking a bolt without thinking about the door type. This can cause weak security and misalignment.
Using a weak bolt for main doors or gates. You need strong bolts for high-security areas.
Forgetting about weather. Outdoor doors need bolts that resist bad weather.
Not installing bolts the right way. If you skip steps, your bolts may not work.
Always look for marks like UL, CE, ANSI, or BHMA. These marks mean your bolts are safe and reliable.
Tip: Certified bolts last longer and protect your property better.
You need to plan before you install your hardware. Good planning helps you avoid mistakes and keeps your bolts working well. Warehouses and big buildings have special needs. You must think about the environment, door size, and safety rules.
Source | Focus Area |
|---|---|
Thermal loads, fire door standards | |
UFC 1-200-01 | Energy saving, air barrier rules |
UFC 3-301-01 | Needs for big openings, corrosion |
UFC 3-190-06 | Coatings to stop corrosion |
UFC 1-300-02 | Picking materials that last |
Check your door’s thickness and height. Pick bolts that fit your door and meet all safety rules. Think about rust and weather. Use strong materials and coatings for outdoor doors. Make sure you install bolts the right way. Follow the instructions and use the right tools.
Note: Careful planning and proper installation help your hardware last for years.
You want to pick the best heavy-duty hardware for your building. A checklist helps you stay on track and feel sure about your choice. This guide helps you avoid mistakes and keeps your doors safe.
1. Confirm Door Type and Size
Measure each door before you buy anything.
Check if your door is metal, wood, or composite.
Make sure the security bolts fit the door’s thickness and height.
2. Choose Grade 1 Hardware
Grade 1 heavy-duty hardware is best for businesses.
This hardware lasts a long time and works for busy doors.
You get strong security bolts that stop damage and wear.
Grade 1 hardware costs more, but it protects main doors.
Look for marks like UL, CE, ANSI, or BHMA on your hardware.
Certified security bolts follow safety rules and standards.
You feel safe knowing your door hardware is tested.
4. Match Bolt Type to Application
Slide bolts are good for metal doors.
Deadbolts give extra safety for solid doors.
Flush bolts fit wooden double doors.
Electronic bolts help you control who can enter.
5. Check Material and Finish
Pick heavy-duty hardware made from stainless steel, brass, or alloy steel.
Stainless steel does not rust and lasts longer.
Choose finishes that match your door and hide marks.
6. Review Installation Requirements
Read the instructions before you start.
Gather all tools you need for installing security bolts.
Decide if you need a pro for heavy-duty hardware.
7. Ensure Weather Resistance
Use hardware that can handle rain, sun, or snow.
Look for sealed bearings and special finishes on security bolts.
Weather-resistant hardware saves money and keeps doors safe.
8. Plan for Maintenance
Choose security bolts that do not need much care.
Sealed parts and self-oiling features help bolts last longer.
Tip: Use this checklist every time you pick heavy-duty hardware for your doors. You get good security and avoid mistakes.
Here is a table to help you remember what to check:
Step | What to Look For |
|---|---|
Door Type & Size | Right measurements, matches material |
Grade 1 Hardware | Strong, lasts long, for business use |
Certifications | UL, CE, ANSI, BHMA marks |
Bolt Type | Slide, deadbolt, flush, electronic |
Material & Finish | Stainless steel, brass, alloy steel |
Installation | Tools, instructions, pro help |
Weather Resistance | Sealed bearings, special finishes |
Maintenance | Low care, self-oiling, sealed parts |
You can use this checklist to make smart choices. Heavy-duty hardware keeps your property safe and protected for a long time.
You make your warehouse safer by picking the right bolt type, material, and certification. Heavy-duty hardware uses strong metals and tested locks to protect doors. If you buy heavy-duty door bolts from certified suppliers like D&D Hardware, your hardware will last a long time. Experts can help you choose heavy-duty hardware, follow safety rules, and avoid maintenance problems. Use the checklist to check your heavy-duty hardware choices. Ask for a site survey to look at your heavy-duty door system and plan for better safety.
Strong heavy-duty hardware keeps your doors safe and your business secure.
Heavy-duty door bolts are made with stronger materials. They are thicker than regular bolts. These bolts give your property more security. They last longer and do not break as easily as regular bolts.
You should look for marks like UL, CE, ANSI, or BHMA. These marks show your hardware is certified. Certified hardware means your security follows important rules.
Some heavy-duty hardware is easy to put in with simple tools. If your door is tricky or you feel unsure, you can ask a pro for help.
Main doors, warehouse doors, and storage room doors need heavy-duty bolts. These bolts help protect your things and keep your business safe.
Check your heavy-duty hardware every few months. Look for damage or parts that are worn out. Checking often helps you keep your security strong.
Stainless steel and alloy steel are the best choices for heavy-duty bolts. These metals do not rust and keep your door safe.
You can use heavy-duty bolts with electronic security systems. This gives your door extra safety and better protection.