Unicel C-4305 Replacement Filter Cartridge | 50 sq. ft. | Cal Spas / Sundance / Sonfarrel C7471 Guaranteed to stay crisp and

Guaranteed to stay crisp and salty

waterproof seal in high-moisture pool and spa environments

Reduces unpleasant odors

For above ground pools - sturdy blow-molded design

1 Qt of 90 Day Algae Prevention and Remover

Unicel C-4305 Replacement Filter Cartridge | 50 sq. ft. | Cal Spas / Sundance / Sonfarrel C7471 Guaranteed to stay crisp andThe Unicel C 4305 is a 4000 Series 50 sq. ft. replacement filter cartridge engineered for spa filtration systems requiring a compact, high pleat count cartridge. With 193 precision folded pleats of 3 oz. Reemay 2033 polyester media, this cartridge delivers exceptional surface area in a 14 7 8" profile trapping fine debris and maintaining water clarity between cleanings. Open top and bottom caps allow for straightforward installation into compatible