Product review (5 stars): Only Way to Go Sometimes
For any area where there is limited space, this works. It's not as easy as hooking up round ducts, but with a little aluminum tape and some clamps it does an excellent job of sealing. Unfortunately the apartment sent a crew to clean the dryer vent and they just pulled the dryer out and pushed it back without paying any attention to what they were doing. Now I have to re-do the whole thing!

Great for those small apartment utility closets though!