Envirograf MG and MGL intumescent grilles
Envirograf MG and MGL intumescent grilles Price range: £57.91 through £356.64 ex VAT
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Envirograf Intumescent Pipe Collar
Envirograf Intumescent Pipe Collar Price range: £5.89 through £356.15 ex VAT

Envirograf Intumescent Block Grilles

SKU: GRP-envirograf-intumescent-block-grilles

Price range: £54.77 through £145.16 ex VAT

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Additional information
Envirograf product code

Product 36
Fire resistance

Up to 4 hours; 240 minutes integrity to BS 476 Part 22; 127 minutes to EN 1366-3; 120 minutes to EN 1363-1 and EN 13501-2
Tested to

BS 476 Part 22 (1987), EN 1366-3:2005, EN 1366-3:2009, EN 1363-1:2000, EN 13501-2:2004, EN 1634-1:2012 +A1:2018, EN 1364-5:2017
Sizes

100 x 100mm to 500 x 500mm in 25mm increments; standard thickness 38mm, depth options 15mm to 38mm, specials to order
Coverage

Approximately 90 per cent free ventilation area
Application

Doors, walls and ventilation ducting; round, oblong and square shapes
Lead time

Custom made, typically produced within 24 hours
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Description

Envirograf Product 36 block grilles are built from metal plates clad in intumescent material, foil covered and faced with wire mesh. They give around 90 per cent free ventilation area in normal use and seal completely when the intumescent expands in a fire, and are made to suit round, oblong and square openings.

  • Up to 4 hours fire protection, with 240 minutes integrity recorded to BS 476 Part 22
  • Standard range from 100 x 100mm to 500 x 500mm in 25mm increments
  • Used in doors, walls and ventilation ducting; edges can be sealed with mastic or fireproof adhesive

Technical documents

Envirograf publish the technical data sheet and safety data sheet for this product on their own site, where the current revision is always shown. Envirograf technical documents

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