DISCONTINUED Cartridge Filter Waterway Top Load 25 sqft 1-1/2"s 500-2510. This item has been discontinued by the manufacturer. See/compare R172502 from Pentair.
Waterway Plastics filter model 500-2550 is a 1-1/2"s top load filter. For use on portable spas, it is designed to mount in a niche so that the main body is under the shell of the spa, while the top...
Waterway Plastics filter model 502-2510 is a 2"s top load filter. For use on portable spas, it is designed to mount in a niche so that the main body is under the shell of the spa, while the top is...