Nature2 DuoClear 45 Mineral Cartridge | W28002 San Juan Engineered for pools 21 to

Engineered for pools 21 to 24 feet in diameter

Panel reference markings are missing after service or cleaning

The 519-9517 part serves as a skimmer designed for in-ground setups

When the original adapter is cracked

or on your balcony

Nature2 DuoClear 45 Mineral Cartridge | W28002 San Juan Engineered for pools 21 toWhat This Part Is Used For The Nature2 W28002 DuoClear 45 replacement mineral cartridge is designed for use in DuoClear 45 pool sanitation systems. It supplements chlorine sanitation by releasing minerals into the circulating water. Why This Part Matters An expired cartridge limits mineral contribution and can lead to higher sanitizer demand. Correct replacement helps maintain system balance and predictable performance. Installing the wrong cartridge