DuraVent PelletVent Pro 4" Inner Diameter Stainless Steel Vent Pipe with Black Outer Wall - 12" Length: This unit necessitates a venting pipe with a 4" inner diameter. The stainless steel used in this vent pipe is high-quality. It's made to stand up to the heat of wood pellet and maize stoves and fireplace inserts. Stainless steel .012" is used for the inner wall. .018" galvalume is used on the exterior wall. The air is insulated by the double wall design. Seams are laser welded as part of the high-quality construction. It connects effortlessly with other components due to the twist lock mechanism. The twist lock functionality is the same as before. All that is required is a little twisting. Adaptors and adhesives aren't required.

12 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