Product Description
3M™ Fire Barrier Pass‑Through Device PT4SD is a 4 in square hinged metal enclosure for through‑penetration firestop assemblies. It features internal intumescent and foam smoke seals, supports up to 3 hr fire ratings (ASTM E814/UL 1479), and allows re‑entry for adding or modifying cables, wires, or pipes.
Key Benefits
- Re‑enterable Design: Hinged access allows easy addition/removal of cables or pipes without dismantling the firestop assembly.
- Fire & Smoke Protection: Built-in intumescent material and foam seals provide up to 3 hr fire rating and hot/cold smoke seal (ASTM E814/UL 1479).
- Stackable Configuration: Square design supports gang installations for multiple penetrations.
- Robust Construction: One-piece metal enclosure, red-finish for easy inspection.
- Versatile Penetration Support: Accepts cables, metallic/non-metallic pipes, conduit, or combinations.
Best For
- 4″ square cable/trade penetrations
- Telecom/data networks in rated walls/floors
- Copper, plastic, metallic cable bundles
- Gangable enclosures for multiple runs
- Retrofit and new construction jobs
- Areas needing accessible firestop solutions
Product Properties
| Property | Specification |
|---|---|
| SKU / Product ID | PT4SD (B40065437) |
| Size | 4″ × 4″ (102 × 102 mm) |
| Fire Rating | Up to 3 hr per ASTM E814 / UL 1479 |
| Smoke Seal | Hot & cold smoke rating (UL L‑rating) |
| Construction | One-piece hinged metal enclosure with intumescent & foam seals |
| Re-entry | Yes—facilitates cable/pipe changes |
| Stacking | Stackable for multi‑penetration applications |
| Packaging | 6 devices per case |
