PelletVent is a complete venting system from DuraVent for stoves and inserts that use oil fuel or multi-fuels (including wood pellets, corn, cherry pits, switch grass, coffee husks, walnut shells, soybeans, wheat, sunflower hulls, rapeseed and sugar beets). The 4 in. Tall Cone Roof Flashing is designed to cover the vent hole in a roof to protect your home from leaks. When used in conjunction with a storm collar, the flashing diverts rain safely away from your home. For added durability, PelletVent seams are factory-sealed on all elbows, tees and fittings.