SELKIRK CORP 244024 4x24 Pellet Stove Pipe Product Overview 4" x 24", 4VP-24, Pellet Stove Pipe. Type L vent tested and listed to UL-641 and UL-103 standards. Use to vent pellet appliances. Pellet vent cannot be interchanged with other manufacturer systems. Double wall and insulated design. Designed with a stainless steel inner wall and a 0.018 galvalume steel outer wall. 1" inch clearance to combustibles twist-lock construction . From the Manufacturer 4" x 24", 4VP-24, Pellet Stove Pipe. Type L vent tested, and listed to UL-641, and UL-103 standards. Use to vent pellet appliances. Pellet vent cannot be interchanged with other manufacturer systems. Double wall, and insulated design. Designed with a stainless steel inner wall, and a 0.018 galvalume steel outer wall. 1" inch clearance to combustibles twist-lock construction . Details: Part Number: 244024 Item Weight: 3.9 pounds Product Dimensions: 4.5 x 4.5 x 24 inches Item model number: 244024 Item Package Quantity: 1 Batteries Required?: No Shipping Weight: 3.7 pounds Domestic Shipping: Item can be shipped within U.S. International Shipping: This item is not eligible for international shipping. Learn More Date First Available: February 9, 2011 Features: Manufactured in China Easy to use Highly durable 4" x 24", 4VP-24, Pellet Stove Pipe Type L vent tested and listed to UL-641 and UL-103 standards Use to vent pellet appliances Double wall and insulated design Designed with a stainless steel inner wall and a 0.018 galvalume steel outer wall