Pentek - 20" x 2.5" Empty Fillable Cartridge Shell 0.2 - 2 GPM The Harmsco HB-20-5W is a

The Harmsco HB-20-5W is a 20-inch pleated sediment cartridge engineered for Big Blue 20" x 4

Viqua QL-950 Replacement Lamp and Quartz Sleeve Combo Kit

5 inches Height 5

Best used with compensated hardness calculations that account for total mineral content of your source water

Pentek - 20" x 2.5" Empty Fillable Cartridge Shell 0.2 - 2 GPM The Harmsco HB-20-5W is aPentek 20" x 2. 5" Empty Fillable Cartridge Shell Custom filtration media housing for specialized water treatment applications Food Grade Construction 20" Standard Size Refillable Design Media Customizable The Pentek empty fillable cartridge shell gives you complete control over your filtration media. This 20 inch housing lets you create custom blends of activated carbon, specialty resins, bone char, KDF, or other media tailored to your specific water