Product review (3 stars): Seller automatically adds buyers to email list.
Actually the filter earns 5 stars. Price is good and the filter arrived as promised. Easy to install.
Waterfall Filter Company gets 1 star for putting me on their email list. I consider this spam since I need to "unsubscribe"
"Click here to unsubscribe from future automated emails from this seller"

The 3 stars is an average