Does what it's supposed to do.
Does the job it is supposed to do (have changed one filter after three months and it was totally clogged up...so I know it's doing a good job!) and since it's not an off-the-shelf product, size-wise, it was reasonably priced and was delivered promptly, I'm very happy.<br /><br />Only gave it four stars...because there might be something wrong with it...but I haven't found out what it is yet!
Rating: 4 stars