Product Description

The STI SpecSeal® SSB Firestop Pillows are lightweight, intumescent firestop cushions designed to seal medium to large openings with multiple penetrants.
Each pillow consists of a mineral fiber core encapsulated in a water-resistant intumescent membrane and heat-sealed poly bag.
Under fire exposure, they expand in all directions to block fire, smoke, hot gases, and sound transmission. Ideal for cables, trays, pipes, bus ducts, and HVAC penetrations, they allow quick installation and easy retrofitting without damage to existing seal.

Key Benefits

• Intumescent Expansion – Expands in all directions, providing up to 4-hour fire ratings.
• Reinstallable – Easily removed and replaced for cable retrofits without damaging the seal.
• Lightweight & Durable – Heat-sealed poly bag with no sewn seams or loose fill.
• Superior Airtightness – Air leakage tested to less than 1 CFM/sq.ft at 400 °F (204 °C).
• Acoustic Barrier – Provides STC 60 sound rating for noise control.
• UL/FM Approved – Tested to ASTM E814 (UL1479), ASTM E119 (UL263), and CAN/ULC-S115.

Packaging

• SSB14: 1” × 4” × 9” (25 × 101 × 225 mm), 0.19 lbs – 20 pcs/case
• SSB24: 2” × 4” × 9” (50 × 101 × 225 mm), 0.31 lbs – 10 pcs/case
• SSB26: 2” × 6” × 9” (50 × 152 × 225 mm), 0.39 lbs – 22 pcs/case
• SSB36: 3” × 6” × 9” (76 × 152 × 225 mm), 0.55 lbs – 16 pcs/case
• Color: Red
• Shelf Life: No limit under dry storage (≤130 °F / 54 °C)