Firoblok Intumescent Sleeves for Round Plastic Ducting

Firoblok Intumescent Sleeves for Round Plastic Ducting are foil-wrapped sleeves designed to provide fire protection where plastic ventilation ducts pass through fire-rated walls, floors, or ceilings. In the event of a fire, the intumescent material expands inward to seal the duct opening, helping to prevent the spread of fire, smoke, and hot gases. They also help reduce heat transfer, protecting nearby metal supports and services from overheating. Easy to cut and install flush with the surrounding surface, the sleeves additionally provide a protective barrier that helps prevent corrosion caused by contact with cement, plaster, or concrete. Foil-faced, fibre-free intumescent material Expands in fire to seal round plastic ducts Absorbs heat to protect metal supports and adjacent services Guards ducts against corrosion from cement, plaster, and concrete Supplied in multiple lengths; easy to cut and install flush with wall, floor, or ceiling Maintains fire compartmentation in block, plasterboard, brick, and concrete constructions