DuraVent 4PVP-VC 4" Inner Diameter - PelletVent Pro Type L Chimney Pipe - Double Wall - Vertical CapCategory: Pro Stainless Steel Chimney CapPelletVent Pro Collection 4 Inch Pellet Chimney Vertical CapWarranty Notice: M&G DuraVent warranty applies to this professional grade product only when installed by a trained professional installer. This 4 Inch Pellet Chimney Vertical Cap from the PelletVent Pro series is a Type L Biofuel Chimney Pipe component and consists of the duralock system for a tight seal. Use for vertical installations only. Required where pipe terminates above the roof line.Features:Fuel Type: BioFuel, Oil, PelletInner Diameter: 4"Use for Vertical Installations OnlyRequired Where Pipe Terminates Above Roof LineDouble Wall ConstructionUL ListedAll PelletVent Pro® components that come into contact with flue gases are built with an inner wall of corrosion resistant superferritic metal. PelletVent Pro is engineered with features for a durable, safe and aesthetically pleasing venting system. PelletVent Pro is a patent-pending venting system for stoves and inserts that use wood pellets, corn and other biofuels, or oil, as fuel. As a result of DuraVent’s cutting-edge manufacturing process and commitment to innovation, PelletVent Pro is uncompromised in attention to detail and performance. This perfect fit and finish is made possible with a laser-welded inner and outer wall. Select components are available in black. PelletVent Pro is now UL listed for 1” clearance to combustibles in the USA. It’s double-wall, air-insulated design offers superior performance. Seams are factory-sealed on all elbows, tees, and fittings. Since the introduction of pellet stoves in the 1980’s, DuraVent is recognized as the industry leader in venting systems for pellet stoves.Looking for Simpson Dura-Vent? You found it! Simpson Dura-Vent has changed their name to DuraVent. DuraVent is a recognized technological leader in the venting industry. Consistently the first to market with new innovations in venting systems, DuraVent has captured a leadership position in emerging markets. DuraVent has patents for several products and continues to design safe and technologically advanced venting. The company's research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for PelletVent Pro. Scientifically proven materials and unequalled engineering make DuraVent products not only the best choice, or safest choice, but the only choice for professional quality venting products.