Product Description
3M™ Fire Barrier Cast‑In Device for Metal Pipes (B40065433) is a pre‑installed intumescent device that firestops metallic penetrations through concrete slabs. Designed to be installed before pouring, it attaches to floor forms and seals around pipes post‑pour—eliminating the need for core‑drilling or additional firestop steps.
Key Benefits
- Time‑Saving Installation: Installs with formwork before pour—no drilling and patching needed.
- Adjustable Height: Retails tear‑strip design allows 2½ in to 8 in slab thickness adaptation.
- Rugged & Durable: One‑piece design resilient to jobsite impact and handling.
- High Fire Rating: Provides 3 hr fire protection per ASTM E814/UL 1479 for metallic pipes.
- Water‑Leakage Rated: UL‑listed with W‑Rating Class I for reliable leak prevention.
Best For
- Metal pipe penetrations in concrete slabs
- Construction projects needing fast-track firestopping
- Sites requiring high‑durability, cast-in firestop solutions
- Concrete pours from 2½ in to 8 in thickness
- Applications requiring both fire and water leakage resistance
Product Properties
| Property | Specification |
|---|---|
| Model SKU | B40065433 |
| Application | Metal pipe penetrations in concrete slabs |
| Height Range | 2½ in to 8 in (adjustable via tear strips) |
| Fire Rating | Up to 3 hr per ASTM E814 / UL 1479 |
| Water Rating | W‑Rating Class I (UL water‑leakage test) |
| Installation | Pre‑cast form or deck mounted before pour |
| Design | One‑piece intumescent device, rugged construction |
