M&G DuraVent 3PVL-A12R 3" x 12" Adjustable Pellet Stove Double Wall

New 3" x 12" Adjustable Length Double Wall Pellet  Stove Vent Pipe by M&G DuraVent Inc. # 3PVL-A12R item 182923 DuraVent 3"D x 12"L, Adjustable Length Pellet Vent Pipe Fully Unitized, Twist Lock Construction Adds 3" to 10" in Length Can Be Used In Both Vertical & Horizontal Installations 3-5/8" OD Designed For Stoves That Burn Wood Pellets Double Wall & Air Insulated Pipe Inner Wall Of .012" Super Ferritic Stainless Steel Outer Wall .018" Laser Welded Galvalume Patent Pending Venting For Stoves & Inserts That Use Wood Pellets UL Listed For 3" Clearance To Combustibles In USA & Canada