Guide to choosing door hardware

A fire door closer is not simply a device that moves a door toward the frame. It must generate enough controlled closing moment to move the leaf through its full arc, overcome hinge friction, air-pressure differences and seal resistance, and finally provide enough latching action for the latchbolt t

When a fire door assembly fails an inspection, it's rarely the door leaf itself. More often than not, it's a piece of hardware — a lock, a hinge, a closer — that wasn't rated for the assembly it was installed on. On commercial projects, the lock is one of the components most likely to get flagged, w

Selecting a UL-listed mortise lock for commercial fire doors is not about finding a lock that fits the door. It is about finding a lock that maintains the integrity of a tested, listed assembly under conditions no one wants to experience. The right lock carries a verifiable UL 10C listing, matches the door's physical dimensions, meets Grade 1 durability standards, and aligns with the project's hardware schedule.

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

You want to feel safe at home or work, right? Choosing lock cylinders starts with checking your security needs. Look at your door type and legal rules too. Lock cylinders help keep you safe and calm. Burglars often use cylinder lock pulling. This happens in 16% of break-ins. So strong protection is

You need certified lock cylinders for large construction projects. Poor quality or uncertified cylinders can compromise the safety of your property and may not pass necessary safety inspections. If you're looking to save money, it's essential to verify the right certifications. Ensure that your supp

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 option

Choosing the right door stopper goes far beyond just preventing a door from hitting a wall. Especially in high-traffic environments or specialized spaces, door stoppers must meet durability, safety, and compatibility requirements across various door types and interior conditions.

If you live near the coast, salt and humidity can damage door hinges. You need a corrosion resistant door hinge that lasts in tough weather. Choose hinges made from 316 stainless steel with a strong finish. Always check for certifications like ANSI/BHMA, EN 1935, and UL 10C. D&D Hardware has certifi