DuraVent DirectVent 4 in. D X 4 in. D 90 deg Aluminum/Galvanized Steel Elbow Exh
DuraVent DirectVent 4 in. D 90 deg Aluminum/Galvanized Steel Elbow Exhaust. Designed for appliances tested and listed for direct vent and features a fully unitized twist-lock construction. Use of sealant is optional, unless specified by the appliance manufacturer.