Unicel C-4440 Replacement Filter Cartridge for 40 Square Foot Sundance Spas,White bump-cap TOUGH NECK Ribs strengthen the

TOUGH NECK Ribs strengthen the blade tang and minimize breakage

Also Pentair Rainbow high capacity automatic chlorine/bromine pool and spa feeder models HC-3315

(6) Instalation Hardware

it can be used in pools with salt systems

Unicel C-4440 Replacement Filter Cartridge for 40 Square Foot Sundance Spas,White bump-cap TOUGH NECK Ribs strengthen theUnicel C 4440 Replacement Filter Cartridge for 40 Square Foot Sundance Spas,White Diameter: 4 5 8 inch; length: 16 3 4 inch Top end cap: castle, 0 inch inner diameter; bottom end cap: open, 2 1 16 inch inner diameter Pleat count: 158; filter media: 4 ounce reemay 2040; filter area: 40 square feet Get more efficient filtration and better water clarity with Unicel filters Longer time between cleanings; meets oem specifications