Description 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. Advantages – 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 wherecables pass back through a wall. Gaskets must be fitted to all dry lining boxes inpartition walls. Without these gaskets fire can spread into the partition within 4-5minutes. Where cables run through back to back boxes in brick or block walls, flamescan pass through within 6 minutes, resulting in a wall or partition only 6 minutes offire integrity.Gaskets for use inside metal or plastic boxes are made to the size of the box andcome with self-adhesive fixing on the back. Once the backing paper has been peeledoff the fixing strip, the gasket can be adhered to the inside of the box. Holes can becut into the gasket with a sharp knife to receive cables, or the gasket can be cut to fitthe back of the box if cables are already fitted. Dry lining boxes in walls have twopads per box, made to size and adhered top and bottom.Plasterboard ceiling rose boxes can be protected by means of an intumescent coverwhich folds up and is passed through the hole in the ceiling. A hole is then cut in thecover to receive the cables, which are then pulled through the cover, box and ceilingbefore connecting the ceiling rose.Ceiling rose gaskets to fit over the ceiling rose or hook plate should be fitted wheremore than two cables pass through the ceiling. A hole is made in the gasket throughwhich the cables are passed. The backing paper of the self adhesive fixing strip isthen peeled off and the gasket is adhered to the ceiling. The pendant or light fittingcan then be fitted. Order References / Sizes REF DESCRIPTION SSB Gasket set for single shallow box DSB Gasket set for double shallow box SDB Gasket set for single deep box DDB Gasket set for double deep box TDB Gasket set for twinned single deep box 3DB Gasket set for triple deep box MTC Square intumescent cover for Marshall- Trufflex or similar dry lining box MTC/A Acoustic & intumescent cover for Marshall- Trufflex or similar dry lining box BBG One gasket 3mm x 140mm x 235mm Data Sheets TECHNICAL DATA TD030-11-2019.pdfTD030-Standard-11-2013.pdf APPLICATION DATA AP030-11-2019.pdf COSHH DATA HS030-Rubber-11-2019.pdfHS030-Standard-12-2015.pdf
