SuperPro SPR6L24P Class A Stainless Steel Vent Pipe Pipe Length 6" x 24" Superpro Factory Built Chimney LengthSuperPro incorporates the latest technology in factory built chimney design; providing superior performance durability and safety SuperPro is designed to accompany today s appliances which are engineered to produce low emissions and high heat This makes SuperPro the choice of professionals who are looking for a better quality factory built chimney system Features:“Solid Pack” Insulation is augured for better insulating value (than blanket insulation) to keep outside temperatures low for safety and inside temperatures high for performance Premium Grade 304 alloy Stainless Steel Inner and Outer liner for enhanced draft and corrosion preventionPremium Fiber Insulation made of 100% Mineral Wool with no ChloridesEmbossed Coupler: Prevents moister penetrationTwist Lock Connections for easy installation and assembly Limited Lifetime WarrantySlim advanced design allows for installation between 16" centers and still provides 2" clearance from combustible material Specifications:Clearance: 2"Inside Diameter: 6"Outside Diameter: 8"Length: 24"