Product review (5 stars): The MagVent 180 just - WORKS. Easiest install ever and most satisfying results!
Just purchased a house and the remodeled washer/dryer area had very little room to install a flexible dryer duct (i.e. ~5 inches from back of dryer to wall). After several weekends of frustration trying to install, shimmy, and smash dryer duct connectors & fittings together I found MagVent. Best $40 ever spent. The total time it took me to finish the job from opening box, running a dryer vent clog test, and closing the washer/dryer closet doors was about 15 min.

Advice- Save yourself the time and don't try to make a MagVent like contraption yourself, buy an MV-180 and go on with your life.