Product review (4 stars): Keeping It
The filter rim was bent and out of shape in several places due to other purchased items also in the box. Should have been packaged with rim flat. The shipping box it arrived in was perfect, and undamaged. We needed to bend it back into shape in order to install it. Were able to make it as round and flat as possible.  You may need to do the same. It will function once you take the time to bend the rim back to a round flat shape.

Update 2018: First one was Purchased December, 2013 and has functioned well.  It was time to replace so I purchased a 2nd on March 2018.  Good news... It arrived with the rim flat and not bent.  The screen material is a little flimsy but still retains it's shape.  It arrived with the dome slightly crushed but pushing it outward in several places fixed it.  I'm glad these are still available.