Product review (5 stars): Great customer service and a well designed product; a bit expensive but worth the price
Solved our tight space problem with this. Our washer/dryer stack slides into a very narrow space just a couple inches wider than the stack itself. It was almost impossible to connect the flexible dryer duct to the dryer before we installed this. It took some time, but we managed to modify the wall vent system to align the wall vent with the dryer outlet so after adding this magnetic union we could simply slide the stack in or our without struggling with a difficult connection. The design is superb!

Also, MagVent customer service was outstanding. When we first installed this product we damaged the flexible coupling by tightening down the supplied clamp onto a too small dryer tail pipe (about 3-3/4" diameter) causing a small tear in the flexible material. We subsequently modified the tail pipe to make it 4" in diameter which allowed the flex to be clamped on without damage. MagVent sent us a replacement flex coupling at no charge within two days of our contacting them about what happened. They were very responsive..