DuraLiner 8″ 30 Deg Stove Connector (Round-Round) This DuraLiner 8 Inch Round Inside Diameter 30 Degree 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 at a 30 Deg angle. Features: Type: Stove Connector. Shape: Round to Round. Use to Connect Stove to Round DuraLiner Pipe. Specifications: Overall Dimensions: 11.62″ (L) x 10″ (W) x 6.25″ (H). Angle: 30 Deg. Inner Diameter: 8″.