The DuraTech 6 Class A Chimney Pipe Anchor Plate is used to attach DuraTech Chimney to zero-clearance or masonry fireplaces. Check with zero-clearance fireplace manufacturer to ensure DuraTech Chimney is approved for use on fireplace.Fuel Type: Coal, Gas, Oil, Wood Height: 2 Length: 10 Material: Galvanized Steel Pipe Class: Class A Pipe Inside Diameter: 6 Pipe Shape: Round Style: Functional UL Listed: Yes Vent Construction: Double Wall Weight: 2.2 Width: 10