The type B designation is assigned to gas venting systems that meet the safety requirements of underwriters Laboratories, Inc. The AmeriVent® all metal, double wall gas vent is listed as type B by UL and is approved for residential and commercial applications such as category 1 water heaters, boilers, furnaces, space heaters or wall heaters. UL approved type B gas vent products form a continuous passageway from an approved gas appliance to the termination of the vent above the roof of the structure.
AmeriVent® Firestop, 3 in, 3-5/8 in ID x 5-1/2 in OD x 7-1/2 in W x 3-1/2 in H
Dimensions | : | 3-5/8 in ID x 5-1/2 in OD x 7-1/2 in W x 3-1/2 in H |
Size | : | 3 in |