3M Fire Barrier Mortar is a lightweight cementitious firestop product. It is available in poly/paper bags and ready for mixing with potable water. 3M Fire Barrier Mortar does not contain MMMF (man-made-mineral-fibers) or asbestos and does not require fibrous damming materials. 3M Fire Barrier Mortar contains binders free of portland cement and therefore has greater resistance to common concrete poisons than  PC bound products. For use in mechanical and electrical penetration firestopping.

Australian standard testing in accordance with AS1530.4
International testing in accordance with EN1366 and ASTME 814 (UL Listed)
Provides up to a 3-hour Integrity rating
Variable mix ratio permits self-leveling and no-sag application consistencies
Pumpability allows for faster installation
Asbestos free, non-shrinking, non-load bearing formula
20 kg bag (44 lb) yields a minimum 0.25 m2 (2.7 ft2) of opening area at 75 mm depth (3")
Low VOC.