The UNICEL 4CH-950 R is the compatible replacement for the following pool and spa filters:
The Unicel 4CH-950 Pool & Spa Comp. Filter Cartridge has an outer diameter of 4 5/8 inches, and a length of 12 inches. This Unicel Pool Filter has a handle style top, and a 1 1/2 inch open bottom with SAE threads. This Unicel 4CH-950 filter contains 25 square feet of Reemay spunbound polyester pleated filter media.