Product review (2 stars): Good features, Bad QC.
I've tried three exhaust fans (two from BV) in my attempt to find an more economical alternative to some ludicrously priced fans sold locally (Pacific / Sanyangpai / Pac-Air / Sakura).  These options start at over half a grand for the basic models and run into the four digits.

Unfortunately both BV products I've ordered I've also returned.  This product checked all the boxes in terms of functionality, high CFM, stainless, "Euro" design removable grills, led lights, the works.  However on receipt one of the three "removable" grills could not be removed as it would not unlatch.

The two star rating is due to quality control, as the other BV fan had an unbalanced fan which grated against its housing.