A comprehensive range of Intumescent Air Transfer Grille Systems that are suitable for providing protection against the spread of fire through air ducts and openings in fire-resisting constructions such as doors and partitions for up to 60 minutes.
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· Tested to BS 476: Pts 20 & 22
· Up to 60 minutes fire rating
· Available in many different sizes
· Suitable for use in air ducts
· Easy to install and maintenance free
There are no published standards for these components but Quelfire Intumescent Air Transfer Grilles have been tested by Warrington Fire Research Centre according to BS 476 Parts 20 & 22: 1987. Tests show that a 600 x 600mm can provide fire resistance of up to 60 minutes.
The Quelfire ATG Intumescent Air Transfer Grilles are made from a rectangular extrusion of UPVC filled with an intumescent core. Circular grilles are contained with a rim of aluminium. In the event of fire the effect of heat causes the intumescent core to expand, sealing off the duct or opening against the passage of flames and hot gases.
Quelfire ATG Intumescent Air Transfer Grilles are expected to last the lifetime of the service installation. The Intumescent material is susceptible to damage from prolonged contact with water. The Grilles can be cleaned if required by wiping over with a damp cloth.
Quelfire Air Transfer Grilles are designed to fit neatly into rectangular or square ducts and openings. They can be secured in several ways depending upon the surrounding construction and the required appearance.
When a metal duct passes through a fire barrier wall the Quelfire Air Transfer Grille should be secured in the duct on the centre line of the fire barrier. It may be secured in position by angle cleats secured to the duct top and bottom or by screws projecting through the duct walls to either side of the grille (see figure 1). If the screw heads are left projecting they will form a key to the pointing between duct and fire barrier wall which should be in Quelfire QF2 Compound (see separate Product Datasheet).
Should you require any further information regarding this product, please don’t hesitate to contact one of our specialists.
|Product Code||Dimensions (mm)||Fire Rating||Free Air Flow|
|ATG150/150||150 x 150 x 40||60 minutes||125cm²|
|ATG200/200||200 x 200 x 40||60 minutes||233cm²|
|ATG250/250||250 x 250 x 40||60 minutes||383cm²|
|ATG300/300||300 x 300 x 40||60 minutes||542cm²|
|ATG350/350||350 x 350 x 40||60 minutes||756cm²|
|ATG400/400||400 x 400 x 40||60 minutes||977cm²|
|ATG450/450||450 x 450 x 40||60 minutes||1288cm²|
|ATG500/500||500 x 500 x 40||60 minutes||1554cm²|
|ATG600/600||600 x 600 x 40||60 minutes||2278cm²|
|CP150/150||to suit ATG150/150||NA||152cm²|
|CP200/200||to suit ATG200/200||NA||262cm²|
|CP250/250||to suit ATG250/250||NA||424cm²|
|CP300/300||to suit ATG300/300||NA||626cm²|
|CP350/350||to suit ATG350/350||NA||320cm²|
|CP400/400||to suit ATG400/400||NA||1031cm²|
|CP450/450||to suit ATG450/450||NA||1422cm²|
|CP500/500||to suit ATG500/500||NA||1726cm²|
|CP600/600||to suit ATG600/600||NA||2539cm²|