DuraVent DuraVent 3" Inner Diameter - Type B Round Gas Vent Pipe - Double Wall - 3" to 4" Increaser

Round Gas Vent Collection Aluminum Increaser 3 Inch x 4 Inch with 3 x 4 Inch Inner Diameter This Aluminum Increaser 3 Inch x 4 Inch with 3 x 4 Inch Inner Diameter from the Round Gas Vent series is a Type B gas component and consists of the duralock system for a tight seal. Use to increase vent diameter. Additional sizes available through special order. Features: Fuel Type: Gas, Liquid Propane Inner Diameter: 3", 4" Height: 6.75" Double Wall Construction UL Listed DuraVent Type B Gas Vent is designed to m...