Deflecto Duct Increaser and Reducer, Plastic Inline Adapter, White, 4” to 3” (IRB43)
Brand: Deflecto
Color: White


Designed to transition between 4" and 3" diameter ducts
Simply slip the ducts over the increaser/reducer, tightening in place with clamps (not included)
Durable polypropylene construction has a melting point of approximately 325 degrees
Connects a 4 inch dryer exhaust hood to a 3 inch duct
Ideal for bathroom fan installations