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Intumescent fire protection gaskets range

Product 30


Adhesive pads and linings for use with a wide range of electrical boxes, offering fire and/or acoustic protection

Not available to purchase online.

Please contact us on +44 (0) 1 304 842 555 to order.



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. Our extensive range of expanding intumescent gaskets and linings can be used with a wide range of standard electrical boxes.


– Solutions for both plastic and metal boxes, providing up to 4 hours protection- Compatible with single or double socket or switch boxes, BESA boxes, universal conduit boxes and ceiling roses
– Complies with IEE Wiring Regulations, bringing standard boxes in line with Document B

Application Instructions

Intumescent gaskets are essential in metal or plastic boxes where
cables pass back through a wall. Gaskets must be fitted to all dry lining boxes in
partition walls. Without these gaskets fire can spread into the partition within 4-5
minutes. Where cables run through back to back boxes in brick or block walls, flames
can pass through within 6 minutes, resulting in a wall or partition only 6 minutes of
fire integrity.
Gaskets for use inside metal or plastic boxes are made to the size of the box and
come with self-adhesive fixing on the back. Once the backing paper has been peeled
off the fixing strip, the gasket can be adhered to the inside of the box. Holes can be
cut into the gasket with a sharp knife to receive cables, or the gasket can be cut to fit
the back of the box if cables are already fitted. 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.

Order References / Sizes

REF                                DIMENSIONS                               DEPTH                                                                                                

ABG33/2                        075mm x 075mm                       050mm

ABG44/2                        100mm x 100mm                       050mm

ABG44/4                        100mm x 100mm                       100mm

ABG64/2                        150mm x 100mm                       050mm

ABG66/2                        150mm x 150mm                       050mm

ABG66/4                        150mm x 150mm                       100mm

ABG99/2                        225mm x 225mm                       050mm

ABG99/4                        225mm x 225mm                       100mm

ABG12/12/2                  300mm x 300mm                       050mm

ABG12/12/4                  300mm x 300mm                       100mm




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




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

CBG/APC                      For Cooker Box




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




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



The Envirograf® Product 30 range has been extended with a range of Fire and Sound Traps (FST acoustic and fire protection sleeves 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.


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*

* The two products above are supplied with fixing pins. No pins are necessary for the internal products shown below.




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