Empty Refillable Cartridge 20" x 4.5" White Copper3077 Slow-dissolving polyphosphate crystals apply a

Slow-dissolving polyphosphate crystals apply a protective film to pipes and appliances

75" diameter × 8

even if you haven't hit the 6-month mark—premature replacement beats a ruptured filter

It regulates current to the 6-watt UV lamp

Empty Refillable Cartridge 20" x 4.5" White Copper3077 Slow-dissolving polyphosphate crystals apply aWatts RC C BB 20 50 Empty Refillable Cartridge 20" x 4. 5" White Reusable canister for custom media applications in Big Blue housing systems Refillable 50 Micron Foam Pad 155 Cubic Inches WHY IT WORKS Fill It With What You Need Reusable Design Refill and reuse instead of replacing. The Watts RC C BB 20 50 accepts any granular or specialty media you need for custom filtration applications. Big Blue Standard Fits all standard 20" x 4. 5" Big Blue