3M Fire Barrier Pass-Through Device PT4RD, 4 in, Round (Pack of 6)
- Fire stop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479)
- UL classified L rating, Hot and Cold Smoke Seal (foam smoke seal)
- Ideal for electrical, data and communication applications
- Re-enterable fire stop device for blank openings, single- or multiple penetrants in new or retrofit construction
- One-piece, hinged metal enclosure makes installations fast and easy
