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ATG Intumescent Air Transfer Grille

Quelfire

Range of intumescent air transfer grilles 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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Application

Designed to fit into rectangular or square ducts and openings. Can be secured in several ways depending upon the surrounding construction and the required appearance - consult manufacturer for details.

When a metal duct passes through a fire barrier wall, the 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. 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 (specified separately).

Description

Range of intumescent air transfer grilles 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.

Manufactured from a rectangular extrusion of unplasticized polyvinyl chloride (PVC-U) 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.

Features and benefits:

  • Available in a range of sizes.
  • Suitable for use in air ducts.
  • Easy to install and maintenance free.
  • Manufactured in the UK.
  • Expected to last the lifetime of the service installation.

Standards and approvals:

Tested by Warrington Fire Research Centre according to BS 476 Parts 20 & 22: 1987. Tests show that a 600 x 600 mm grille can provide fire resistance of up to 60 minutes.

Application:

Designed to fit into rectangular or square ducts and openings. Can be secured in several ways depending upon the surrounding construction and the required appearance - consult manufacturer for details.

When a metal duct passes through a fire barrier wall, the 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. 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 (specified separately).

General information
Specification data
Product Reference

ATG Intumescent Air Transfer Grille

Type

ATG150/150

ATG200/200

ATG250/250

ATG300/300

ATG350/350

ATG400/400

ATG450/450

ATG500/500

ATG600/600

Coverplate

Required

To suit air transfer grille type; see 'Options' for details.

Not required

Standard product features

Technical characteristics:

  • Composition: Based on an intumescent material made from hydrated sodium silicate within a polyvinyl chloride (PVC) casing.
  • Stability/ reactivity: Thermal decomposition above 300°C.

Product Options

Type:

- ATG150/150:

  • Size (h x w x d): 150 x 150 x 40 mm.
  • Free air flow: 0.0125 m².

- ATG200/200:

  • Size (h x w x d): 200 x 200 x 40 mm.
  • Free air flow: 0.0233 m².

- ATG250/250:

  • Size (h x w x d): 250 x 250 x 40 mm.
  • Free air flow: 0.0383 m².

- ATG300/300:

  • Size (h x w x d): 300 x 300 x 40 mm.
  • Free air flow: 0.0542 m².

- ATG350/350:

  • Size (h x w x d): 350 x 350 x 40 mm.
  • Free air flow: 0.0756 m².

- ATG400/400:

  • Size (h x w x d): 400 x 400 x 40 mm.
  • Free air flow: 0.0977 m².

- ATG450/450:

  • Size (h x w x d): 450 x 450 x 40 mm.
  • Free air flow: 0.1288 m².

- ATG500/500:

  • Size (h x w x d): 500 x 500 x 40 mm.
  • Free air flow: 0.1554 m².

- ATG600/600:

  • Size (h x w x d): 600 x 600 x 40 mm.
  • Free air flow: 0.2278 m².

Cover plate:

  • CP150/150: To suit ATG150/150; free air flow: 0.0152 m².
  • CP200/200: To suit ATG200/200; free air flow: 0.0262 m².
  • CP250/250: To suit ATG250/250; free air flow: 0.0424 m².
  • CP350/350: To suit ATG350/350; free air flow: 0.0320 m².
  • CP400/400: To suit ATG400/400; free air flow: 0.1031 m².
  • CP450/450: To suit ATG450/450; free air flow: 0.1422 m².
  • CP500/500: To suit ATG500/500; free air flow: 0.1726 m².
  • CP600/600: To suit ATG600/600; free air flow: 0.2539 m².

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