Everbilt Duct Increaser/Reducer

Seemlessly connect 3-inch and 4-inch duct with ease and efficiency, making it an ideal choice for bathroom fan exhaust applications. For an extra layer of performance, seal the joined edges with duct tape to further enhance the efficiency of your ductwork system. By properly sealing the connected edges, you can minimize air leaks and improve the overall functionality of your ducts.

• Ideal to connect a 3 in. duct to a 4 in. duct
• Polypropylene resists moisture to remain corrosion-free
• Ideal to use when installing a bathroom fan exhaust system