DuraVent DuraVent 4" Inner Diameter - Type B Round Gas Vent Pipe - Double Wall - 4" to 7" Increaser

Round Gas Vent Collection Aluminum Increaser 4 Inch x 7 Inch with 4 Inch Inner DiameterThis Aluminum Increaser 4 Inch x 7 Inch with 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 PropaneInner Diameter: 4"Height: 6.75"Double Wall ConstructionUL ListedDuraVent Type B Gas Vent is designed to meet the rugged deman...