Unicel C-6430 Replacement Filter Cartridge | 30 sq. ft. | Hot Springs Spas Door & Gate Alarms Verify your filter model's grid

Verify your filter model's grid configuration before ordering — partial grids are NOT interchangeable with full grids

OEM Brand Filter Model OEM Part Number Notes Pentair Clean & Clear Plus R173578 4 cartridges required

it delivers dependable dirt-holding capacity and flow-through performance in high-demand single-cartridge housings

Produces super clear water fast through a highly effective “4 x 1” action

Acid Demand

Unicel C-6430 Replacement Filter Cartridge | 30 sq. ft. | Hot Springs Spas Door & Gate Alarms Verify your filter model's gridThe Unicel 6000 Series C 6430 is a precision engineered 30 sq. ft. replacement filter cartridge built for Hot Springs Spas (Watkins Wellness). Constructed from 4 oz. Reemay 2040 polyester media with 124 pleats, this cartridge delivers reliable filtration performance and extended service life engineered to exact OEM dimensional tolerances for a drop in fit. IMPORTANT: MODEL YEAR RESTRICTION This cartridge is compatible with Hot Springs Spas models