Deadbolt
A deadbolt is a locking bolt that throws into the door frame on its own. It works independent of the door’s latch. That adds security beyond a standard lockset. A single-cylinder deadbolt takes a key outside and a thumbturn inside. A double-cylinder deadbolt takes a key on both sides. Are double-cylinder deadbolts safe? A double-cylinder […]
Push Bar
A push bar is code-required hardware on a door that serves as an emergency exit. People also call it an exit device or panic bar. You open the door with one motion. Push against the bar, and the latch releases. You never turn a knob or hunt for a handle. Building and fire code require […]
Card Reader
A card reader is a device that sits at or near a door and reads an access credential. It passes the credential to the access control panel. The panel decides whether to unlock the door. The credential can be a proximity card, a key fob, or a phone’s mobile credential. A security company usually installs […]
Electric Strike
An electric strike is an access-controlled version of a standard door strike plate. It lets you unlock a door remotely without retracting the latch itself. Access systems trigger it, so a card reader, keypad, or buzzer can release the door. Every electric strike runs on a set voltage. The power supply has to match that […]
Weatherstripping
Weatherstripping is the material that seals the perimeter of a door panel or frame. It blocks air, water, and debris from passing through the gaps. Every exterior commercial door needs it to hold a tight seal. Weatherstripping comes in a few common forms: Can a worn seal become a security risk? A large gap at […]
Threshold
A threshold is the strip that runs across the bottom of a doorway where the door meets the floor. It seals the gap under the door and keeps water from getting through. It also smooths the transition between two floor surfaces. Manufacturers make thresholds from aluminum, rubber, bronze, or brass, depending on the application and […]
Hinges
Hinges are the hardware that lets a door panel pivot inside its frame. Most doors run on one of three types. On commercial entrances, hinge choice comes down to door weight and how often the door opens. A heavy storefront door that swings hundreds of times a day wears out a light-duty hinge fast. Ball-bearing […]
Door Closer
A door closer is a mechanical or hydraulic device that pulls a door shut after someone opens it. It manages two speeds. The “sweep” controls how fast the door swings toward the frame. The “latch”, also called the “check”, controls the final pull into the frame. Door technicians adjust both speeds independently on most models. […]