Title: seems poorly designed and falls off
Review: This filter works well...for a short while. But it seems that the plastic of the mounting collar is inadequate over time to hold this filter in place. Even when put on properly and carefully it eventually loosens and needs to be put back on. After doing this over and over the thing doesn't hold at all. The directions are very clear not to over-tighten and not to use pliers...all of which I followed carefully. Why isn't the mounting collar made of a more substantial material and with enough threading to really hold the filter in place for a good long time? I've written to the company with my feedback...no response. My advice...don't waste your precious money on this unless they improve the design.
Is this product review negative?