PelletVent is a venting system for stoves and inserts that use multi-fuels (including wood pellets, corn, cherry pits, switch grass, coffee husks, walnut shells, soybeans, wheat, sunflower hulls, rapeseed and sugar beets) or oil fuel. The DuraVent PelletVent adjustable roof flashing provides exceptional performance and has a double-wall, air-insulated design with factory-sealed seams and stainless steel construction for long-lasting durability and reliability. Compatible with wood pellet, biofuel and oil-burning stoves, when used in conjunction with a storm collar, this roof flashing prevents rain from leaking into the interior of a home.