Product review (1 stars): I tried this elbow with one load of laundry. ...
I tried this elbow with one load of laundry.  After my dryer ran twice as long as normal, my clothes were only half dry.  I immediately removed it and attached my old setup.  My clothes finished drying in minutes.  The couple inches I gained in room were not worth the wear and tear on my dryer, so I am returning it.