3M FB-Foam to Dia x 0.039-in to 0.039-in H Fire Block Foam Item #1072024 Model #DWA161224L 6:1 Gear ratio rewinds line

6:1 Gear ratio rewinds line 6x faster compared to traditional chalk reels with a 1:1 gear ratio

Size: 4 in

Copper alloy element

Gypsum Board is easily cut for quick installation

3M FB-Foam to Dia x 0.039-in to 0.039-in H Fire Block Foam Item #1072024 Model #DWA161224L 6:1 Gear ratio rewinds line3M Fire Block Foam FB Foam is a fireblock and draftstop used to help seal, fill, insulate and bond for non rated residential and commercial construction. This foam in place fireblock is heat resistant (up to 240F 115C) and meets ASTM E 84 (mod) Class 1 for smoke spread and flame development. This fireblock foam is ready to use and tack free in approximately 5 minutes. Tested as a Type V residential Fireblock to ASTM E 84 (modified) Durable foam is