The DuraTech 14 Class A Chimney Pipe Anchor Plate is used as a starter section for DuraTechBolts directly to a masonry fireplace outletADA Compliant: No Collection: DuraTech Fuel Type: Coal, Gas, Oil, Wood Height: 2 Inner Diameter: 14 Length: 18 Material: Galvanized Steel Outer Diameter: 16-1 16 Pipe Class: Class A Pipe Shape: Round Style: Functional Vent Construction: Double Wall Weight: 5.5 Width: 18