Learn more about the commonly used terminology for retractable security grilles.

 

 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

 Top Hung

The weight of the retractable security grille is supported by the wheels inside the top track

 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 SR1, 2 & 3

 Clear Opening

The dimensions of the space into which the retractable security grille is to be fitted 

 Curved Lattice

'S' shaped grille

 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 one retractable security grille locking to one side is used to secure the window or door

 Double Grille

 'Pair/2 stacks/2 bunches' - ie, where two grilles are used to secure the window or door. These grilles lock in the centre

 Lock Post

Vertical section of the retractable security grille, where the locking mechanism and key hole are located

 Slam Post 

Vertical section that houses the hasps

 Lugs

Brackets onto the box section which assist with installation of the 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 grilles,' 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 grille

 Top Track

 Top runner/top rail/top guide of the grille

 Unequal Pair

 A double retractable security grille with a different 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