3M PT4SMB Single Square Shape Mounting Bracket, 3 hr Fire Rating, 4 in W x 4 in L

3M Mounting Bracket, Single, Square Shape, For Use With: 3M 4 in Square Fire Barrier Pass-Through Devices, 3 hr Fire Rating, 4 in W x 4 in L

• Designed to work in conjunction with 3M fire barrier pass through device square
• Durable metal brackets add strength and support to through penetration firestop assemblies
• Brackets come in pairs for securing the device on each side of the penetration
• Brackets are also available sized for stacked three-plex and six-plex square device configurations