Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Filter for Showerhead

Included was a calendar sticker to help remind you when to change filter out (nice feature). A person should probably stock up on these in order to have one available every six-months. Good product in conjunction with the Culligan showerheads. Had to shake-off just a little filter residue before installing but this "settling" is probably normal. Easy install. Easy use. Good performance so far.