Feature●Firestop tested for up to 3 hours, when used in conjunction with a 2inch (508 mm) 3M Fire Barrier CastIn Device for metallic and nonmetallic penetrations, in accordance with ASTM E 814 (UL 1479)●Easily adjusted height accommodates concrete thickness from 41/2 inches to 8 inches (1143 mm to 2032 mm)●Eliminates time and expense of core drilling holes in concrete●Easytoinstall, annular space allows for hasslefree pipe installation●Accommodates 11/2 inch and 2 inch pipe (381mm and 508 mm)●UL Classified, universally recognized independent test agencyDescription
Our 3M Fire Barrier Cast-In Tub Box Assemblies create a void on the top surface of a concrete slab to allow for plumbing Simply remove the foam insert after the slab is cured to access the void This provides a secure and permanent firestop solution