FIREFOAM B2 HAND HELD 750ML - B2FIREHAND Firefoam B2 Handheld is a quick setting fire rated, one part polyurethane foam in a ready to use hand held canister. Fire resistant for up to 2 hours in certain joint configurations. It expands on application to up to 50 times the can contents and meets the requirements of the test criteria for BS 476 part 20 and DIN 4102 Part 1 for Construction Materials; Class B2.