Unicel 4000 Series 10 sq. ft. Replacement Filter Cartridge | C-4310 Pool Test Kits & Labs and its Class B Insulation

and its Class B Insulation prevents meltdowns caused by overheating

Natural Chemistry PhosFree Extra Strength - 3 L Bottle

Prevents calcium and mineral staining

⚠️ IMPORTANT: NO CENTER CORE

The Century Pool and Spa Pump Motor deliver optimum performance

Unicel 4000 Series 10 sq. ft. Replacement Filter Cartridge | C-4310 Pool Test Kits & Labs and its Class B InsulationThe Unicel 4000 Series C 4310 is a 10 sq. ft. replacement filter cartridge engineered for compact skimmer and spa filtration systems. With 216 precision pleated folds of 3 oz. Reemay 2033 polyester media, it delivers maximum surface area and water clarity in a small footprint housing a direct OEM grade replacement backed by Unicel's industry leading compatibility database. Specifications Filter Area 10 sq. ft. Length 4" Outer Diameter 4 1 4" Top Inner