The Filbur FC-0305M is the correct replacement for the UNICEL 6CH-25RA R and it replaces the following pool water filters:

• Softub Spas 90-802

The Filbur FC-0305M Pool Water Filter Cartridge is constructed with pleated media and Microban technology to trap contaminants, reduce odors, and fight the growth of bacteria and black mold. This pool filter cartridge measures 6" x 5 1/2" with a 1 1/2" MPT bottom style. This Filbur FC-0305M filter is built with 25 sq. ft. of media area and a Closed Crescent Handle top.

Specifications: