The DuraTech 12 Class A Chimney Pipe Anchor Plate is used as a starter section for DuraTech.Bolts directly to a masonry fireplace outletADA Compliant: No Collection: DuraTech Fuel Type: Coal, Gas, Oil, Wood Height: 2 Inner Diameter: 12 Length: 16 Material: Galvanized Steel Outer Diameter: 14-1 16 Pipe Class: Class A Pipe Shape: Round Style: Functional Vent Construction: Double Wall Weight: 4.9 Width: 16