Product Description

The STI SpecSeal® Cast-In Firestop Device is an all-in-one sleeve, core, firestop, and water seal system engineered for concrete floor and ceiling penetrations. It incorporates an intumescent firestopping material that expands up to 250× under fire, sealing metal or plastic pipes, insulated pipes, and cables. Available in trade sizes 2”, 3”, 4”, and 6”, it eliminates the need for core drilling and offers UL fire ratings up to 3 hours, plus a Class 1 W-Rating for water resistance.

Key Benefits

• All-in-One Device – Combines sleeve, smoke seal, firestop, and water seal.
• Intumescent Protection – Expands 250× at 320 °F (160 °C) for superior fire safety.
• UL & FM Approved – Tested to ASTM E814 (UL1479), CAN/ULC-S115 with up to 3-hour rating.
• Bidirectional Sleeve – Works for both floor and ceiling penetrations.
• Time-Saving – Eliminates separate firestopping step, no core drilling required.
• Versatile Options – Extensions, steel deck kits, tub box, and aerator adapters available.
• Durable & Safe – Factory-metered dose of intumescence; made in an ISO-certified USA facility.

Packaging / Sizes

• CD201GW: 2” trade size (1.5–2” pipes), 0.60 lbs
• CD301GW: 3” trade size, 1.45 lbs
• CD401GW: 4” trade size, 1.60 lbs
• CD601GW: 6” trade size, 2.95 lbs
• Extensions: CD201EK, CD301EK, CD401EK, CD601EK for up to 36” concrete depths
• Accessories: Deck adapters, tub box kits, aerator adapters, floor drain devices
• Shelf Life: Unlimited when stored below 130 °F (54 °C)