The Unicel C-4607 R is the correct compatible replacement for the following:
The Unicel C-4607 Pool & Spa Filter is made of Reemay spunbound polyester pleated filter media, with thermally bonded polyurethane caps and punched PVC pipe cores. Featuring Anti-Microbial technology, this replacement filter prevents microbes, such as mold, mildew, bacteria and fungi from reproducing.
Unicel C-4607 R Replacement Pool Filter Specifications:
The top end cap is open and features an inner diameter is 1 15/16". The bottom end cap is open and also features a 1 15/16" inner diameter.