Allows clean-out access for horizontal and vertical installations. Use for 90 offset. Branch swivels for proper alignment. Removable twist-lock Clean-Out Tee Cap.PelletVent Pro is a venting system designed for stoves and inserts that use wood pellets and oil fuel. It is also built to vent corn and other biofuel products (Rated for continuous use flue temperatures up to 570 F) .See all 3"" PelletVent Pro Chimney Components.