The DuraTech 7 x 9 Class A Chimney Pipe Extended Roof Bracket is used to support the chimney when it extends more than 5' above the roof.Provides stability to chimney against wind and snow Mounting brackets and adjustable tubing includedADA Compliant: No Bracket Length: 67 - 114 Collection: DuraTech Fuel Type: Coal, Gas, Oil, Wood Inner Diameter: 7 Material: Galvanized Steel Outer Diameter: 9 Pipe Class: Class A Pipe Shape: Round Style: Functional Vent Construction: Double Wall Weight: 13.6