Product review (1 stars): Ordered this at the end of season last year. ...
Ordered this at the end of season last year.  I always do this so I'll be prepared for the following year; plug & play, ready to go.  I foolishly didn't open the box when it arrived.  Now, I come to discover that there was only one filter instead of two.  Too late to file a complaint, but hopefully anyone reading this will make sure to correct my folly.