This Aluminum Draft Hood Connector with 3 Inner Diameter from the Round Gas Vent series is a Type B gas component and consists of the duralock system for a tight seal. The draft hood connector is used to connect appliance or single-wall connector to vent system.Connect appliance or single wall connector to vent system Double wall construction UL ListedADA Compliant: No Collection: Round Gas Vent Fuel Type: Natural Gas, Liquid Propane Height: 6 Inner Diameter: 3 Material: Aluminum Pipe Class: Type B Pipe Shape: Round Style: Contemporary Modern Weight: 2 Width: 7-1 2