DuraVent 8693 Close Clearance Connector Kit Double-wall interior stovepipe for connecting wood stoves to manufactured chimney. DVLs double-wall, air insulated design reduces clearances to combustibles from 18 to 6 , the closest clearance to a wall of any connector pipe. DVL improves stove performance by maintaining high flue gas temperatures for a strong steady draft. Because the inner wall is stainless steel the flue heats up faster, stays hot longer, minimizes the formation of creosote, and has the same life expectancy as the chimney. Adjustable lengths eliminate the need for cutting or crimping. Use kit to connect between appliance and chimney for typical 8 through-the-ceiling installations. Kit Includes: DVL/DuraBlack Adapter, (2) 24 DVL Double-Wall Adjustable Black Pipe. Configuration: Kit. Fuel Type: Wood. Material: Stainless Steel. Pipe Class: Stove Pipe. Pipe Inside Diameter: 6 . Pipe Shape: Round. Theme: Modern. UL Listed: Yes. Vent Construction: Double Wall.