M G Duravent 6DVL-E90 6 Inch Dura-Vent DVL Double-Wall 90 Deg Sectioned Non-adjustable Elbow Chimney has been filling the supply and accessory needs of over 8 000 chimney sweeps hearth retailers masons and contractors for over 25 years. Chimney has the privilege of serving over 80% of the chimney professionals in America.Founded by Robert Daniels Sooty Bob in 1978 Chimney has grown from a one-man operation to a national network of six warehouses and a manufacturing plant. From its headquarters in Fairfield Iowa Chimney plays a major role in providing for the Chimney industry.6 Inch Dura-Vent DVL Double-Wall 45 Deg Sectioned Non-adjustable Elbow