SELKIRK CORP 243060 Pellet Stove Pipe Manufactured in United States Easy to use Highly durable 3" x 5', 3VP-60, Pellet Stove Pipe Model VP, Type L, Vent tested and listed to UL-641 standard, as well as the UL-103 standard 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