Terminology

Retractable Security Grille Terminology

Item	Definition
Anchor Channel	The sections that are bolted to each side of the opening to which the retractable security grille is attached.
Bottom Rolling	The weight of the retractable security grille is supported by the wheels on the bottom track of the grill.
Top Hung	The weight of the retractable security grille is supported by the wheels inside the top track of the grill.
Box Section	Hollow metal tube that helps fitting the retractable security grille by making a reveal.
Bungs	Plastic plugs to fill the fixing holes in window or door grilles
Centre Stops	To stop the retractable security grille expanding past the centre of the window or door opening.
Certification	Accreditation of retractable security grilles by the LPCB to the security industry standard of LPS 1175 Security Rating 1.
Clear Opening	The dimensions of the space into which the retractable security grille is to be fitted.
Curved Lattice	's' shaped grill
Face Fixed	A surface mounted or 'plant on' retractable security grille.
Keyed Alike	When a series of retractable security grills are operated by the same key ie 'keyed same'.
Lattice Bank	The cross sections that make up a retractable security grille. These can be either diamond or 's' shaped.
Lift Out Track	Removable bottom track for door security grilles.
Lift Up Track	A fold-up bottom track for a door security grilles.
Swivel Return	'Hinge away / swinging sash / fold back / pivot' - when the stack of a retractable security grille is hinged to lie flat against the side of the opening. Particualarly useful for door security grilles.
Single Grille	'One bunch / stack ' ie where 1 retractable security grille locking to one side is used to secure the window or door.
Double Grille	'Pair / 2 stacks / 2 bunches ie where 2 grilles are used to secure the window or door. The grilles lock in the centre.
Lock Post	Vertical section of the retractable security grille where the lock of mechanism and key hole are located.
Slam Post	Vertical section that houses the hasps.
Lugs	Brackets on to the box section to assist installation of the retractable security grille.
Manufactured Sizes	The size the retractable security grille is made to.
Manufacturing Tolerance	+ or - 2mm of the ordered size of the retractable security grille.
Retractable Security Grille	Also know as 'sliding grilles', 'concertina grills' or 'collapsible gates'
Reveal Fixed	When the collapsible gate is fitted between the walls / recess / aperture.
Stacking	The 'bunch' or 'sash' that remains when the retractable security grille is open.
Straight Lattice	Diamond shaped grill.
Top Track	Top runner / top rail / top guide - of the retractable security grille.
Unequal Pair	A double retractable security grille with a differnt number of verticals on each side.
Vertical	The 'picket section' that holds the lattice of the window grille in place.
Viewed From Inside	When the window or door grille is looked at from the inside of the building.

LPCB Certified Steel Doors

Bradbury M2M1 is certified to LPS 1175 Security Rating 1. This means the security door can withstand an attack using a selection of tools chosen to represent an opportunistic attack with a maximum test time of 10 minutes applying.

Security Door Terminology

Item	Security Door Definition
11 point locking	11 points of contact between the security door 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 security 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 plugs to conceal fixing holes on security doors
Clear Opening	The normal clear opening width when the security door is in the fully open
Cloaking Strip	Steel angles used during installation
DDA regulations	Disability Discrimination Act as applies to security doors/entrances
Deadbolt	A rectangular bolt than 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 the security door opens when viewed from inside
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 over rides fire exit hardware if external 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
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 security only
Hinges	The stainless steel plates and pins used to attach the door unit to the frame
Intrumescent 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 Different	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 secuity 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 f
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
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 for to push open a security door
Sashlock	A lock incorporating a deadbolt and latch that can latch closed without a key
Strike	The box on a security door frame where the bolt enters the door jamb
Strike Plate	The metal latch plate (keep) in a steel doorframe 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 or latch bolt or turn
Vewed from Inside	Surveying the door opening/structure/aperturefrom the inside of the building
Weather Seal	Adhesive strips on the door frame designed to impede airflow and moisture
Zintec Steel	Zinc coated steel

Terminology

Retractable Security Grille Terminology

Item

Definition

LPCB Certified Steel Doors

Security Door Terminology