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, fire retardant poly bag.

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
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