Bath Fan Roof Vent. Bathroom fan sound levels sone rating refers to the sound. It is compatible with 3 or 4 ductwork and includes a 3 to 4 adapter for convenience. Most bath vents for homes are 3.
Vent your bath and kitchen exhaust fans through the roof through a special roof hood. Plus there was mold inside the attic.
They will have to be transitioned from 3 to 4 exhaust pipe.
So much opportunity to show building owners that you are better. Included is 8 ft of 4 in diameter flexible foil ducting that conforms to ul 181 class 1 air connector requirements. The black steel roof cap features a built in back draft damper and bird screen. They will have to be transitioned from 3 to 4 exhaust pipe.
