Product review (5 stars): Great Solution
This product offers a great solution for clothes dryers installed in locations where venting through a wall is impractical.  The device fits within a window opening, much as a temporary window screen would, where the window sash closes against the device.  This provides an easy means of venting the dryer outside, with simple requirements for installation and removal.  The simplicity delivers an easy way to vent only at those times the dryer is needed.