DuraVent 3 to 4 Inch Diameter Rheem/Ruud B-Vent Pipe Appliance Increaser

DuraVent 3 to 4 Inch Diameter Rheem/Ruud B-Vent Pipe Appliance Increaser is the smallest of 8 sizes: Lower Vent Size 3 inches; Upper Vent Size 4 inches.

The DuraVent 3 to 4 Inch Diameter Rheem/Ruud B-Vent Pipe Appliance Increaser is a handy piece of equipment that makes connecting your appliance's venting system a breeze. It's designed to smoothly transition your vent from a 3-inch to a 4-inch diameter right on top of your appliance, saving you a lot of hassle. This clever increaser features internal spacing beads that help keep a consistent air gap, ensuring your venting works just right. Built with a sturdy galvanized steel outer wall and a smooth aluminum inner wall, it's made to last. Putting it all together is super simple, so you can get your system up and running without a hitch.