A 140 to 300 mm (dependent on requirement) deep steel sleeve that is positioned around the ductwork. The device is pre-lined with a high expansion intumescent and is designed specifically to provide a low cost solution for fire sealing combustible ducting penetrations whilst completely protecting the cavity within stud work walls. The device can be retro-fitted to existing ducting.
Ultra-slim body design ensures easy installation in awkward situations
Fully tested at BM TRADA to 2 hours integrity and Insulation walls