3M Fire Barrier Cast-in Tub Box Assembly 3TB, 3 in, 6/case

Features :

• 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 agency