25 sq. ft. Cartridge Filter Hayward CX225RE, American Commander II C-4325 FC-1220 Diameter…………………………………4-5/8″ Length……………………………………11-7/8″ Top End Cap: id/config……………..2-1/16″ / open Bottom End Cap: id/config…………2-1/16″ / open The load cartridge is used on: Hayward Pool Products MicroStar-Clear C225 (in-line), OEM P/N CX225RE Pentair Pool Prod Commander II (in-line) , OEM P/N 57010500 Apollo Spas Emerald Spas Sonoma Spas Note: Hayward original is 4-3/4″ OD and 11-13/16″ overall length. American original is 4-11/16″ OD.

50 sq. ft. Cartridge Filter Grecian Spa C-4350 FC-3072 Diameter…………………………………4-5/8" Length……………………………………23-3/4" Top End Cap: id/config……………..2-1/16" / open Bottom End Cap: id/config…………2-1/16" / open The cartridge is used on: Discovery Spas