Product review (5 stars): Money well spent
I just bought this and installed it today.  The original vent hose that I was using would prevent my dryer from being able to be pushed back to the wall and with a small laundry room, every inch counts.  The original hose also kept popping off the wall connection due to the angle.  Once I installed two Snap to Vent 90 degree elbows, I was able to push my dryer all the way to the wall and nothing is in a bind.  So far, this was money well spent.  I wasn't able to use the rubber inserts though, but I didn't need them.  I have a pretty tight seal without them.