BOSS 812 Fireblock Foam - 12 oz.

BOSS 812 is a single component polyurethane foam designed to prevent the spread of smoke and poisonous gases from one area to another, through gaps and voids in non-fire-rated walls and floors. BOSS 812 may be used in vurtually all through-penetrations, in both horizontal annd vertical applications. It cures to form a semi-rigid non-sag seal. Expands and bonds quickly and has excellent adhesion to most building substrates.

NOTE: Not for door or window use. Not a firestopping sealant.

Includes plastic nozzle for 360-degree dispensing.