Some of the common terminology you may come across when specifying a Bradbury steel security door.

14 Point Locking: Fourteen points of contact between the leaf and frame

Active Leaf: The primary door in a pair of security doors (first to open, last to close)

Anti-Pry Strip: Folded steel along the full length of leading edge for protection against attack

Bolt Through Handle: D shaped handles which are bolted through the door leaf

Brush Strip: Aluminium strip with a nylon brush, located at the bottom of the door leaf to aid against weather ingress

BS3621: An insurance standard for security door locks

Bungs: Round plastic or steel plugs, designed to conceal fixing holes on doors

Clear Opening: The normal clear opening width when the security door is fully open

Cloaking Strip: Steel angles used during installation

DDA Regulations: Disability Discrimination Act, as applies to security doors/entrances

Deadbolt: A rectangular bolt that can only be disengaged with a key or thumbturn

Deadlock: A lock which incorporates a deadbolt, operated by a key to lock and unlock

Dog Bolts: Steel bolts that engage the security door into the frame on the hinge side

Door Closer: A device designed to regulate the closing of a security door automatically

Door Handing: The direction a security door opens (when viewed from inside for Bradbury doors)

Door Hardware: Ironmongery fitted onto the security door

Door Leaf: The main part of the security door that opens and closes within a fixed frame

Double Throw Bolt: A deadbolt that has two distinct extended positions, both are deadlocked

Drip Strip: Aluminium strip located at the bottom of the leaf to prevent weather ingress

Escutcheon Plate: Plate fitted around a cylinder hole of a security door

Euro Profile: A cylinder lock mechanism using a cam actuator

External Override: External lockset which overrides fire exit hardware, if keyed outside entry is required

Fire Exit Doors: Security doors designed with emergency exit hardware

Fire Exit Hardware: Hardware used for fire exit security doors

Fire Rated Doors: Security doors constructed to provide a specific degree of fire protection (up to 240 minutes)

Flush Bolts: Non-keyed deadbolt, typically mounted flush to inner security door leaf

Frame Profile: Folded steel around the security door leaf (also known as the door jamb)

Frame to Frame: Actual size the security door frame will be received

Full Cylinder: Cylinder with key operation for inside and outside of the security door

Half Cylinder: Cylinder with key operation for one side of the door only

Hinges: Stainless steel plates and pins used to attach the door unit to the frame

Intumescent Seals: Seals used for fire rated doors that expand when exposed to heat/fire

Keyed Alike: Two or more cylinders or locks that have the same combination

Keyed to Differ: A group of cylinders or locks, each of which is combinated differently

Kick Plate: A protective plate mounted on the bottom of a steel door to prevent damage

Latch: A bolt which is sprung, so the security door can be latched shut by pulling it to

Latching Speed: The final speed of a steel door just prior to closing

Leaf and Half: Double security doors with a primary leaf wider than the secondary leaf

Lever Handle: A turn device in the general shape of an 'L' used as an alternate to a knob

Limit Stay: A device designed to keep the steel door leaf at a 90 degree angle

Mortice Lock: Lock which is set into the body of the security door

Oval Cylinder: Oval shaped cylinder

Packers: Plastic shims used for installation between the frame and structure

Passive Leaf: The secondary steel door in a pair of security doors (last to open, first to close)

Powder Coating: Polyester powder coated finish to a steel door, also available in wood-grain and textured effects

Pre-Hung: Steel door leafs which are attached to the frame ready for installation

Priming: The coating applied to a steel door before the paint or finish

Push Plate: A stainless steel rectangular trim mounted to push open the door

Sashlock: A lock incorporating a deadbolt and latch, that can latch closed without a key

Strike: The box on a door frame where the bolt enters the door jamb

Strike Plate: The metal latch plate (keep) in a steel door frame, that the doorknob latches

Structural Opening: Opening in wall into which the security door is to be installed

Threshold: The bottom area of the security door frame that you step over when entering

Thumb Turn: The component that projects or retracts a dead bolt, latch bolt or turn

Viewed from Inside: Surveying the door opening/structure/aperture from the inside of the building

Weather Seal: Adhesive strips on the door frame designed to impede airflow and moisture

Zintec Steel: Zinc coated steel