Product review (4 stars): Great unit, but weak lights
Just installed the BV yesterday.  Packaging was awesome.  The box was so heavy that I originally thought installation was going to be a pain.  But after taking it out of the box we realized much of that weight was the packaging.  The unit itself is very manageable

As for installation, the instructions were worthless.  Don't even bother reading them..... they'll just confuse you.  Just look at where the exhaust hole needs to be and where the plug is going in and create holes accordingly.  Then just screw it in or bolt it or whatever.  It's that simple

One suggestion.  I saw in one review that somebody attached a straight extension for the exhaust by screwing it in after drilling holes in the extension.  We did that and it was very helpful.

The fans are very quiet and the unit appears to be very well made.  The only reason I am giving it 4 stars is the light seems to be weak and at a light spectrum I don't like