The DuraTech 10 x 24 Galvanized Class A Double Wall Chimney Pipe Length is designed for appliances that are tested and listed for is used with a 1700° F rated chimney system, such as zero-clearance or masonry fireplaces, furnaces, boilers, water heaters, ranges, or other appliances fueled by oil, coal, gas, or wood. Tested to UL 103 and listed under MH 7399. Requires fastening with screws.ADA Compliant: No Collection: DuraTech Fuel Type: Coal, Gas, Oil, Wood Length: 24 Material: Galvanized Steel Pipe Class: Class A Pipe Inside Diameter: 10 Pipe Shape: Round Style: Functional UL Listed: Yes Vent Construction: Double Wall Weight: 19.9 Width: 12