Product review (5 stars): This thing is PERFECT! I had a rear-exhaust dryer
This thing is PERFECT!  I had a rear-exhaust dryer, with a very shallow closet, and just connecting the regular dryer hose caused the door of the closet to not be able to close.  But by hooking this up, and extending it up to the top of the dryer, and then putting on the hose, it fits perfectly.  This device saved me a lot of money, and eased all of the stress I had.