• Envirograf Intumescent Gasket & Acoustic Covers
  • Envirograf Intumescent Gasket & Acoustic Covers
  • Envirograf Intumescent Gasket & Acoustic Covers
  • Envirograf Intumescent Gasket & Acoustic Covers

Envirograf Intumescent Gaskets & Acoustic Covers

Product 30

We no longer stock this product, but can recommend as our nearest alternatives:

Please contact our Technical Team on 0113 2455450 (option 2) or send a message to [email protected] prior to purchase/use for advice on suitability.

Quantity

Description

References & Sizes

Gaskets for BESA boxes, universal conduit boxes, and socket or switch boxes

Ref Dimensions Depth
ABG33/2 75mm x 75mm 50mm
ABG44/2 100mm x 100mm 50mm
ABG44/4 100mm x 100mm 100mm
ABG64/2 150mm x 100mm 50mm
ABG66/2 150mm x 150mm 50mm
ABG66/4 150mm x 150mm 100mm
ABG99/2 225mm x 225mm 50mm
ABG99/4 225mm x 225mm 100mm
ABG12/12/2 300mm x 300mm 50mm
ABG12/12/4 300mm x 300mm 100mm

Gaskets for Standard Metal Boxes 

Ref Description
BEG Standard BESA Boxes
DPG Gasket for Double Metal Box
SPG Gasket for Single Metal Box
CRG Gasket for Ceiling Rose
ICRG Internal Gasket for Ceiling Rose

 

Acoustic & Fire Protection for Standard Metal Boxes 

Ref Description
SPG/APS/26 For Single Metal Box 26mm deep
SPG/APS/37 For Single Metal Box 37mm deep
SPG/APS/47 For Single Metal Box 47mm deep
DPG/APD/26 For Double Metal Box 26mm deep
DPG/APD/37 For Double Metal Box 37mm deep
DPG/APD/47 For Double Metal Box 47mm deep
DPG/K1N For Quad Metal Box 47mm deep
CBG/APC For Cooker Box

Gaskets for Dry Lining Boxes 

Ref Description
SSB Gasket set for Single Shallow Box (2 gaskets per set)
DSB Gasket set for Double Shallow Box (2 gaskets per set)
SDB Gasket set for Single Deep Box (2 gaskets per set)
DDB Gasket set for Double Deep Box (2 gaskets per set)
TDB Gasket set for Twinned Single Deep Box (4 gaskets per set)
3DB Gasket set for Triple Deep Box (4 gaskets per set)
MTC Square intumescent cover for Marshall-Tufflex or similar dry lining box
MTC/A Acoustic & intumescent cover for Marshall-Tufflex or similar dry lining box

 

Shallow & Deep Dry Lining Boxes (35mm or 44mm Deep) - Complete with Intumescent Gasket(s) 

Ref Description
GBOX/R Circular ceiling rose box 32mm deep with intumescent gasket
GBOX/S Single shallow box with intumescent gasket
GBOX/D Double shallow box with intumescent gasket
GBOX/T Twin shallow box with intumescent gasket
GBOX/SD Single deep box with intumescent gasket
GBOX/DD Double deep box with intumescent gasket

Fire and Sound Trap for Electrical Boxes

These have integrated intumescent material for use in timber-framed houses, etc. The FST products are easy to install and they will fit all cavity depths, for single/double, shallow/deep switch/socket boxes.

External

FST/EXT are supplied with fixing pins. No pins are necessary for the internal products below.

Ref Description
FST/EXT/S/S&D Fire & Sound Trap External to fit Single Shallow & Deep Boxes
FST/EXT/D/S&D Fire & Sound Trap External to fit Double Shallow & Deep Boxes

Internal

Ref Description
FST/INT/S/S Fire & Sound Trap Internal to fit Single Shallow Boxes
FST/INT/D/S Fire & Sound Trap Internal to fit Double Shallow Boxes
FST/INT/S/D Fire & Sound Trap Internal to fit Single Deep Boxes
FST/INT/D/D Fire & Sound Trap Internal to fit Double Deep Boxes

Envirograf Intumescent Gaskets & Acoustic Covers offer fireproof protection for metal and plastic boxes used to house light switches, plug sockets and ceiling roses used for hanging lights and ceiling fans. The liners fit BESA boxes, universal conduit boxes, and socket or switch boxes, as well as special sizes for ceiling roses and cooker boxes.

These intumescent liners expand in cases of fire to prevent flames and smoke spreading through a building, especially along easily-flammable wiring. Tests on boxes fitted without gaskets saw fire enter a partition wall in 4-5 minutes, whilst cables that run through back-to-back boxes in brick and block walls offered as little as 6 minutes of fire integrity.

Important

Where conduits pass through fire-rated ceilings and walls, it is a requirement to terminate each side with a BESA or universal box fitted with intumescent gaskets to stop fire penetrating.

It is also a requirement to fit intumescent gaskets in the back of metal switch/socket boxes where they are back-to-back and cables pass through the wall.

All dry lining boxes and metal boxes fitted in dry-lining walls must have intumescent gaskets fitted to comply with the 17th Edition IEE Regulations.

To comply with Document E of UK Building Regulations (sound-proofing in plasterboard ceilings and walls), acoustic protection must be fitted for both impact and airborne sound.

Application

Internal gaskets are made for the size of the plastic or metal box, with self-adhesive strips on the reverse for easy fixing into place. Holes can be cut in the gasket to allow for cables and wires to pass through, or the gasket cut to fit if services are already present.

Dry lining boxes in walls have two pads per box, made to size and adhered top and bottom.

Plasterboard ceiling rose boxes can be protected by means of an intumescent cover which folds up and is passed through the hole in the ceiling. A hole is then cut in the cover to receive the cables, which are then pulled through the cover, box and ceiling before connecting the ceiling rose.

Ceiling rose gaskets to fit over the ceiling rose or hook plate should be fitted where more than two cables pass through the ceiling. A hole is made in the gasket through which the cables are passed. The backing paper of the self adhesive fixing strip is then peeled off and the gasket is adhered to the ceiling. The pendant or light fitting can then be fitted.

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 30
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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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