Use the masonry chimney conversion kit with 4 x 6-5 8 direct vent gas stoves. Use existing masonry chimney and route the exhaust gases and intake air through the side of the masonry chimney. Kit 46DVA-KMC includes: Cap Adapter, 18 x 18 Flashing, Round Ceiling Support Wall Thimble Cover, Retro Connector. for 4 x 6-5 8 direct vent. Termination Cap and 4 flex are sold separately.ADA Compliant: No Finish: Galvanized Fuel Type: Gas, Liquid Propane Includes: Cap Adapter, Flahsing, Retro Connector, Round Ceiling Support, Wall Thimble Material: Aluminum, Galvanized Steel Pipe Class: Direct Vent Pipe Inside Diameter: 4 x 6-5 8 Pipe Shape: Round Style: Contemporary Modern UL Listed: Yes Vent Construction: Double Wall Weight: 7