DuraLiner 6″ Flat Round Stove Connector This DuraLiner 6 Inch Chimney Relining Flat Stove Connector efficiently helps venting of heating appliances while protecting masonry chimneys from the damaging effects of flue gas. Use to connect stove to round or oval DuraLiner pipe. Round stove connector is sized to convert Oval stove outlets to Round DuraLiner pipe. Features: Type: Connector. Use to Connect Stove to DuraLiner Pipe. Converts Oval Stove Outlets to Round DuraLiner Pipe. UL Listed. Specifications: Overall Dimensions: 10.25″ (W) x 10.25″ (D) x 2″ (H).