The DuraTech 8 Class A Chimney Pipe Chase Top Flashing encloses the top of a chase while providing a ventilation air passage from the chase. It is UL listed and includes spacer clips. Storm collar is not included.Fuel Type: Coal, Gas, Oil, Wood Material: Galvanized Steel Pipe Class: Class A Pipe Inside Diameter: 8 Pipe Shape: Round Style: Functional UL Listed: Yes Weight: 2.3