3M™ Fire Barrier Pillows are self-contained, highly-intumescent product designed to firestop a wide variety of through penetrations including cable trays, conduit and blank openings.
- Firestop tested for up to 3 hours in accordance with ASTM E 814 (UL 1479)*
- L-Rating (smoke seal) achievable when used in conjunction with 3M™ Fire Barrier Moldable Putty
- Easy retrofit: remove and reuse pillows as needed
- Graphite-free composition
- Available in three sizes**
- Easy to install, easy to inspect
- No wire mesh required to secure in opening
- Can be cut and retaped with box sealing tape for odd-sized gaps
* Ratings achieved in openings up to 1024 sq. in. (6606 sq. cm).
** Any combination of pillow sizes can be used to firestop an opening provided the minimum compression requirements are met (minimum of 25% within the opening).