3M B258 Firestop Block, 8 in Overall Lg, 5.12 in Overall Wd, Block, 2 hr, 12 PK 48-32-4097 Size(s): SAE Sizes: 5/16 in

Size(s): SAE Sizes: 5/16 in

Standard Socket Count/Style ( 27) 12-Point

Easy-to-read size markings

Drop Tested Printer Weight 2

Shape Rectangular Indoor/Outdoor Indoor Standards FM

3M B258 Firestop Block, 8 in Overall Lg, 5.12 in Overall Wd, Block, 2 hr, 12 PK 48-32-4097 Size(s): SAE Sizes: 5/16 inFirestop Block, Fire Rating 2 hr, Fire Resistance Type Fitted Barrier, Firestop Type Block, Interlocking Not Applicable, Overall Height 2. 36 in, Overall Length 8 in, Overall Width 5. 12 in, Color Maroon, Features Installation Requires No Special Tools, No Cure Time, Primer Paint Ready: Block is Paintable with Primer, Fits Medium to Large Openings in Wall and Floor Through Penetrations, Tight Firestop Seal, Market Commercial, Standards ASTM E814 (UL