Envirograf Intumescent Fan Cover
  • Envirograf Intumescent Fan Cover

Envirograf Intumescent Fan Cover

Product 14

Intumescent Fan Covers for electrical ventilation extractor fans in walls or glass, with a grille that expands in fire, sealing openings to prevent the spread of fire and smoke for up to an hour.

  • See sizes below
  • For wall-mounted and window-mounted electric fans
  • Fits most leading makes - VentAxia, Xpelair, etc.
  • Required under UK Building Regulations and IEE Regulations (16th Edition)

VAT excluded

£182.02 Tax incl.



Glass mounted:

Ref Height Width Depth Diameter
FCG5 315mm 315mm 150mm 260mm
FCG10 285mm 285mm 140mm 222mm
FCG12 390mm 390mm 170mm 337mm
FCG14 210mm 210mm 50mm 110mm
FCG19 430mm 430mm 200mm

Wall mounted:

Ref Height Width Depth
FCW1 310mm 310mm 20mm
FCW5 315mm 315mm 150mm
FCW10 285mm 285mm 140mm
FCW12 390mm 390mm 170mm
FCW14 430mm 430mm 40mm
FCW18 210mm 210mm 50mm
FCW19 430mm 430mm 187mm
FCW20 458mm 429mm 30mm

Other sizes and colours can be made to order - contact our sales team on 0113 245 5450 for more information.

These Envirograf Intumescent Fan Covers stop the spread of fire and smoke when activated, sealing with expanding intumescent material on the fan grille for up to an hour of fire protection.

Versions of the fan cover are available for wall-mounted extractor fans, fitting to brick, block, concrete and plasterboard, and window-mounted extractor fans. Required under UK Building Regulations and IEE Regulations (16th Edition), the fan covers fit over most leading designs of electric extractor fan, such as VentAxia and Xpelair.

Use when an electric extractor fan is installed in a fire barrier wall or glazing system to maintain the integrity of the fire barrier. The cover fit around the fan, fixing to the wall or window.


1. The wall mounted unit simply fits over the fan unit, offering one hour fire protection. This can be fixed to brick, block or concrete using rawl plugs & steel screws (32mm No8 or No10 screws or small rawl bolts). For plasterboard or lath & plaster walls before the plasterboard is applied metal or timber fixings can be allowed for while building, otherwise if fixing to existing walls or ceilings use steel butterfly toggle bolts

2. The glass mounted unit consists of two plates, X and Y, that are fitted to either side of the glass. The fan unit is then fixed as usual. The grille unit Z is attached to the plate X with self tapping screw

Material Specification:

Multigraf Intumescent material chemical constitution

  • Mineral Wool Fibre 20-70% by weight
  • Exfoliating Graphite 20-60% by weight
  • Organic Binder (including adhesive coating) 5.0-30% by weight

Test Details:

Test Integrity Insulation
Chiltern FEI/F97028 45 Minutes N/A
B.T.C 11081F(a) 63 Minutes 43 Minutes
Cidemco 16858a-1-a (EN1366-3 & EN1363-1) 122 Minutes 22 Minutes

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and ConditionsWe will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.

Any Envirograf products to be used in or for Harrods department store should be authorised with our Technical Team prior to purchase.

Product Details
Product 14

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

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