Pellet Vent is a complete venting system from Dura Vent 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 Flexible Chimney Stove Pipe is designed for use in a masonry chimney and features twist-lock connections to easily connect with rigid Pellet Vent piping. For added durability, Pellet Vent seams are factory-sealed on all elbows, tees and fittings.Find the FLEX CHIMNEY PIPE 3X60 at Ace.