DuraVent PelletVent Pro 12" Adjustable Stainless Steel Pipe with Galvalume Outer Wall - 4" Inner Diameter - 4PVP-12A: A venting pipe with a 4" inner diameter is required for this unit. You may need to place materials on your home's outside wall from time to time. Because of the unique demands that this circumstance places on the equipment, you must ensure that whatever you purchase is capable of meeting the standards. The DuraVent PelletVent Pro 12" Adjustable Stainless Steel Pipe with Galvalume Outer Wall is designed to provide you with a product that can be installed on your home's exterior wall and will not be affected by the elements.

Efficiently vents pellet and corn-fueled stoves and inserts Adjusts 4" to 10" .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 UL Listed Limited lifetime warranty Dimensions: 4" inner diameter with a 4 5/8" outer diameter 12" length