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At D&D, we understand that every property is different. That's why we offer customized solutions to meet your specific needs. Some of our related projects include
You have lots of options when picking commercial door hardware. Certified hardware is important for safety and security. High-security deadbolts, electronic access readers, and UL-listed panic bars keep your property safe. They also help you follow rules and laws. Many business owners worry about du
UL certification is crucial for ensuring that door hardware is safe and compliant with regulations. By choosing D&D Hardware’s UL Listed products, you are selecting hardware designed to meet the highest safety and performance standards. There are many misconceptions about door hardware and fire safe
Here is a quick list of the top 10 fire rated door hardware manufacturers for 2026:ASSA ABLOYAllegiondormakabaStanley Black & DeckerD&D HardwareGEZESimonsVoss TechnologiesHager CompaniesCISASargent and GreenleafPicking a fire rated door hardware manufacturer with good certification is important for
You need CE certification for your door hardware to follow strict rules and keep your project safe. If you do not follow the rules, you could lose fire ratings. Insurance might not pay for damage. You could break building codes. You might even get in trouble with the law. The Grenfell Tower Fire sho
How UL Fire Rated Mortise Locks Support Fire Door ComplianceFire door compliance is not a matter of preference—it is a matter of life safety, code adherence, and legal liability. At D&D HARDWARE Industrial Co., Ltd, we do not view fire-rated hardware as a product category; we view it as an engineeri
Specifying door hinges for a commercial project means more than picking a finish or a material. It means selecting the right ANSI/BHMA grade—because that single number determines how long the hinge will last, how much wear it can withstand, and whether it meets the performance requirements for the b
When specifying access solutions for commercial buildings, hospitals, or multi-family housing, one question comes up repeatedly: What does UL 10C certification actually mean for a fire rated mortise lock?As a fire door hardware manufacturer, I have seen too many spec sheets list certifications witho
Locks are one of the world's oldest inventions, with a wide variety and thousands of years of development. The door lock is one of the locks that are indispensable for any occasion in our lives. The importance of door locks is particularly evident. Today we will combine the definition and characteristics of door locks with a brief summary and analysis of door locks.
With the development of metalworking technology, the use of door hardware is becoming more and more widespread. door hardware is an extremely important type of everyday metalwork in people's daily lives, and it is used in wooden doors, glass doors, sectional doors and other metal devices made by man
Security door locks are a type of door lock that is very strong and has a wide range of applications. Doors equipped with anti-security door locks can resist abnormal opening under certain conditions for a certain period of time, security door locks have certain security protection properties and co
In order to provide an effective barrier to prevent fire, a door has to remain closed within the frame.
A door lock is a device used to lock a door in place to prevent others from opening this door. Door locks are widely used and can be found almost everywhere. As people's quality of life levels increase, there are more and more types of door locks. However, many people do not know how to properly sel
Door locks are essential equipment in people's lives and without them, life's safe living and privacy will not be guaranteed. The development of door locks has been going on for centuries, and the variety of locks on the market has become unimaginable. From the point of view of the material of the d
Cross-keying is a term that is used to describe a cylinder that is operated by more than one change key. This is different than a master keyed cylinder because usually a cylinder that is master keyed will only be operated by one change key as well as the master key.
Types of door bolts Door bolts provide a means of securing a door from the inside.Reasonable security is usually provided those inside the building without any means of operating the bolt from the outside. Non-ferrous metals such as aluminum and brass are commonly used in the manufacture of bolts f
Stainless Steel Door Hinge is one of the most widely used hinges. A hinge is a piece of hardware that links a door panel, a window panel, and a frame, without which the door or window would not function properly. Hinges are available in iron, steel, nylon, and stainless steel. Iron hinges are not strong in rust and corrosion resistance and will rust after some time; nylon hinges are strong in wear resistance, hinges are used very frequently and not strong in wear resistance and are easily damaged; steel hinges are high-grade hardware with good performance but expensive, and Stainless Steel Door Hinge is bright and shiny in appearance and high in corrosion resistance, and will not rust even when used in a humid environment. The Stainless Steel Door Hinge is the most cost-effective and is the best-selling product on the market today because it is robust and durable. Here are some answers.
Doors are essential in home decoration, but nowadays many people choose Hidden Door Hinges for the aesthetics of their homes, the role of Hidden Door Hinges is to make their whole decoration look clean and tidy. So Hidden Door Hingess in the purchase need to choose how to choose? Take a look below w
Before you are being introduced to any products you should understand why some items of hardware are handed. This means that certain products will not suit all doors or windows and below are intended to help you know which products may be handed and how to determine the correct one.
You want the best concealed door hinge for your project. Here are the top concealed hinge makers for 2025: D&D Hardware, SOSS, Simonswerk, Blum, Sugatsune, HAFELE, Tectus, Maxave, Southco, JinKaiLi. When you compare door hinge makers, look for good quality, custom choices, and a strong worldwide presence. The best brands give hidden, invisible, and custom options for inside and outside doors. They follow strict rules and give high quality choices for hidden doors.
In the world of commercial construction and life safety, fire protection is not just a regulatory requirement; it is a critical component of building design that saves lives. Among the various components of a fire-rated door assembly, the UL 10C Mortise Lock plays a pivotal role. But how exactly are
