DuraVent DuraConnect I 4 in. Dia x 48 in. L Single-Wall Flex Connector

DuraConnect and DuraConnect II is a flexible aluminum connector system. Can not to be enclosed and cannot penetrate through walls, floors, or ceilings. Twist-lock connectors on each end for fast, easy professional installations.|No more cutting, crimping, fitting, or fastening with screws, adjustable in length, simply twist-lock, bend, and connect for an 80% labor savings|DuraConnect and DuraConnect II flexible connector systems may be used as a connector between the gas appliance outlet and a double-wall type B gas vent or masonry chimney|Due to the high thermal conductivity of aluminum, DuraConnect and DuraConnect II systems heat up rapidly|1 in. clearance to combustibles