Unicel C-6430 Replacement Filter Cartridge | 30 sq. ft. | Hot Springs Spas Door & Gate Alarms Add twice per week during

Add twice per week during periods of heavy use

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

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

Provides an active bromine residual

OEM Brand Product Name Part Number Notes Hayward Star-Clear II C1100 CX1100RE — Cal Spas — — Verify model compatibility before ordering (This is not an exhaustive list

Unicel C-6430 Replacement Filter Cartridge | 30 sq. ft. | Hot Springs Spas Door & Gate Alarms Add twice per week duringThe 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