Product review (5 stars): Replaces worn out filter just fine
Had to buy this filter box to replace one that was a little over a year old and used mostly overnight, every night.  No problems to report with the filter replacement box itself at all.  However, the first one sent to me was cracked in a few places, probably during shipping by FedEx since the outer shipping box looked like it was crushed a little.  I called the company and they immediately sent me a replacement filter box at no charge and no questions asked.  Great customer service!