Bk pellet connector pipe. 3" pipe connector. Type L insulated pipe for pellet stove applications. 3". Type: Type L Insulated, Size: 3", Color: Black, Material: Stainless Steel Liner & Galv Jacket No. 3VP-PC: Type: Type L Insulated, Size: 3", Finish: Galvanized, Material: Stainless Steel Liner & Galv Jacket