DuraVent PelletVent Pro 4" Inner Diameter Stainless Steel Vent Pipe with Black Outer Wall - 6" Length: This unit necessitates a venting pipe with a 4" inner diameter. Stainless steel is used to construct this vent pipe. It's made to stand up to the heat of wood pellet and corn-fired stoves and fireplace inserts. The inner wall is made of stainless steel with a thickness of .012". The outside wall is galvalume with a thickness of .018". The air is insulated by the double wall construction. Laser welded seams are part of the high-quality structure. It connects effortlessly with other components thanks to the twist lock mechanism. with the same twist lock mechanism Only a little twisting is required. Adaptors and adhesives are not required.

6 Inch length Efficiently vents pellet and corn-fueled stoves and inserts .012" stainless steel inner wall and .018" galvalume outer wall Air-insulated double-wall construction Laser-welded seams Secure twist-lock connections 1" clearance to combustibles 4" inner diameter with a 4 5/8" outer diameter Sleek black finish UL Listed Limited lifetime warranty