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Description
3M™ Fire Barrier Block B258 is a pre-formed foam block designed for easy installation to effectively seal larger openings against smoke, toxic gas and flame. It is simple to use and helps reduce sound transmission.
Specifications
Item Type
Firestop Accessories
Manufacturer
3M
Color
Maroon
Dimensions
8 in L x 5 in W x 2 in H
Material
Foam
Specifications
Up to 2 hr Fire Rating
Specifications Met
ANSI Specified, ASTM E814/E84/E90/E413
Suitable For Use With
Conduit
Features
- EASY INSTALLATION: Installation requires no special tools
Additional Info
Package Length
1
Package Width
1
Package Height
1
Package Weight
1.233