Metal-Fab Type B-Vent 4" x 48" Single Wall Flex Connector btu107500 000 BTUs Nat and 42

000 BTUs Nat and 42

000 Vent Type Direct Vent Type of Gas Natural Gas Venting 3 x 4 Flex Installation Insert KWH (Maximum) 11

Direct Vent Wall Furnace

Approved for multi-story combustible wood floor installations

condensation or smoke in the room

Metal-Fab Type B-Vent 4" x 48" Single Wall Flex Connector btu107500 000 BTUs Nat and 42Type B Gas Vent products are tested and listed to UL 441 for approved gas appliances and feature our innovative twist lock connection and locking tab, eliminating the need for sheet metal screws. Metal Fab Type B Gas Vent combines hemmed flues and casings that maximize product durability and reliability and minimize installation time. Designed for versatility, Metal Fab Type B Gas Vent products 3" 6" adapt to major competing brands and when installed