Designed and tooled to perfection for the chimney professional, the DuraTech Chimney System sets a new standard in quality, design, and performance.This product requires 2 air clearance to combustibles for all diameters Joint Connection Overlap: 1-1 2 Joint Connection Type: Twist-Lock standard on all diameters Outer Wall: 430 G-90 Galvanized Steel, .016 Thick, or .021 Galvalume Steel Inner Wall: 430 Stainless, .020 Thick. Insulation: Thermal Tech Blanket Maximum Temperature Rating: Rated for continuous use at 1000°, intermittent use at 2100° Supported Fuels: Wood, Oil, and Coal UL Listed: 103HT, 103Fuel Type: Coal, Gas, Oil, Wood Material: Dead Soft Aluminum Pipe Class: Class A Pipe Inside Diameter: 8 Pipe Shape: Round Pitch: 0 12 - 6 12 Style: Functional UL Listed: Yes Weight: 6
