Broan Roof Vent Kit, Flexible Duct, 8 ft. L RVK1A

You have to assemble the vent by turning the round part (right side of picture) 360 degrees into the roof vent. the round part is very flimsy and broke when assembling the unit. This should come fully assembled and be made of stronger metal.

The Master Bath has a window but cannot use in the Winter. Installation was ok. The trips back and forth to the attic was a bother. Fan draws out the moisture. Purchased a higher priced product to get the lower sound decib as bathroom is very small. Works really well.

This kit comes with flex pipe. Q & A number 6 from Broan customer service on this website advises to use rigid ductowrk when connecting to exhaust fans. Considering that this product is advertised as an bath and ventilation fan, can you enumerate as to why you include flex pipe with the product?

For bathroom exhaust fan applications, studies have shown that a 6" duct has much less resistence than a 4" duct, thus maintaining the CFM output. In fact, your most efficient line of fans come with a 6" duct. Good weatherization practices require a secure attachment to a dedicated roof vent. Why not make a roof vent with a 6" collar. For that matter, why not also make a roof vent with 7" collar for your range hood fans?