The DuraTech 5 Class A Chimney Pipe Trim Collar for Roof Support for 4 12 - 6 12 Pitch conceals the gap between the chimney pipe and ceiling cut out when used with the roof support. It is made of galvalume and painted black.ADA Compliant: No Collection: DuraTech Fuel Type: Coal, Gas, Oil, Wood Height: 1 2 Material: Galvanized Steel Pipe Class: Class A Pipe Inside Diameter: 5 Pipe Shape: Round Pitch: 4 12 - 6 12 Style: Functional UL Listed: Yes Vent Construction: Double Wall Weight: 2.3 Width: 18