The DuraTech 6 Class A Chimney Pipe Adjustable Tee Support Bracket Use as wall support for chimney system. Use of straps is optional. Supports up to 50Â’ of DuraTech Chimney without straps, and 70Â’ of DuraTech Chimney with straps. Attaches to chimney pipe. Can be installed above or below the Tee. If installed below the Tee, a short section of pipe is required. Adjustable base provides 2 to 6 clearance to wall.Adjustable Base Provides 2 to 6 Clearance to Wall Supports up to 50 Feet of DuraTech Chimney Pipe Without Straps and 70 Feet with StrapsDepth: 11 Finish: Galvanized Fuel Type: Coal, Gas, Oil, Wood Height: 11-3 4 Inner Diameter: 6 Material: Galvanized Outer Diameter: 8 Pipe Class: Class A Pipe Shape: Round Style: Functional UL Listed: Yes Vent Construction: Double Wall Weight: 12 Width: 10