Cartridge diameter -6" Cartridge length - - 9-1/8" Top configuration -Handle, Bottom configuration -Open Bottom dimension -1-1/2" Square footage -35

Cartridge diameter -7-1/2" Cartridge length - - 5" Top configuration -Open, Bottom configuration -Open Top dimension -4-7/8", Bottom dimension -4-7/8" Square footage -25 Spa OEM's that use this filter cartridge- Sundance Spas

Cartridge diameter -4-3/4" Cartridge length - - 4-3/4" Top configuration -Top Hat, Bottom configuration -Closed Spa OEM's that use this filter cartridge- Suncance Spas, Jacuzzi Spas