3M Fire Barrier Putty Sleeve Kit DT 400, 4 in Round, 1/case
- Ready-to-install kit for complete cable or blank firestop installation.
- Tested up to 4 hours for fire-rated through penetration systems in accordance with ASTM E814 (UL 1479).
- No gasket required to ease installation process.
- Rolled-out lip on sleeve allows for smooth cable entry.
- Brackets and sleeve work in tandem to help prevent slipping during installation.
- Allows for both new and retrofit data and telecom cable firestop installations.