We love this design and construction but the directions were slightly off.  It took my husband a few extra  hours of re-doing something because the directions were incorrect.  Also, the louvers should definitely come pre-screwed in.  They left them only partially screwed in which doesn't make a lot of sense and screwing in 120 screws takes a lot of time.   If they did them partially they should just take the extra time to do them fully.