Product Overview SpecSeal® Firestop Pillows are through-penetration firestop products resembling small cushions or soft bricks. These intumescent and highly resilient pillows are installed in openings by compressing and stacking into the opening in a brick-like fashion. SpecSeal® Firestop Pillows consist of a mineral fiber core material sealed with a water-resistant intumescent membrane. This coated core material is then heat-sealed in a tough, nonirritating, fireretardant poly bag. Main Features Intumescent – expands in all directions for a tough, tight seal Reinstallable for easy retrofitting of cables Lightweight for ease of installation Easier wire screen requirements for large openings and 3 to 4 hour ratings Heat-sealed poly bag – strong & durable No sewn seams to unravel or tear, no irritating fiberglass Monolithic encapsulated core, no loose fill No special tools required Superior air leakage ratings Show More Show Less
