Product review (1 stars): What a disappointment!
This was sold as a recirculating fan, when in fact there is no carbon filter made or available to fit this unit. The installation manual has some really bad directions that do not make sense as they are written by someone who is not familiar with the english language.  The toggle that one uses to select venting to the inside or outside was loose and there was no way to tell in which position it belonged.  There are two fans and they are so loud that one cannot have a conversation.  Had much discussion with the sellers, who indeed did contact the company in China, but I spent hours and hours looking for the filters their instructions said I needed for recirculating, but they finally admitted they didn't exist.  I had to pay to have this item installed, wire run, and then uninstalled, had to box it and return it.  Also, there is no name anywhere on this fan, tho it said BHI on the box.  I am now very happy with the Broan I replaced it with...