Empty Refillable Cartridge 20" x 4.5" Clear Max Adaptor (65-4000) Brass 1/2" NPT x 1/2" NPT x 1/4" (No Adapter) It measures electrical conductivity across

It measures electrical conductivity across 0-25

lengthening service intervals

Verify your local code requirements before installation

and other freshwater sources requiring copper monitoring

Empty Refillable Cartridge 20" x 4.5" Clear Max Adaptor (65-4000) Brass 1/2" NPT x 1/2" NPT x 1/4" (No Adapter) It measures electrical conductivity acrossThe Watts RC C BB 20 50 gives you complete control over your 20 inch Big Blue filtration setup by letting you fill the cartridge with whatever media your water needs. This clear, refillable housing holds up to 155 cubic inches of custom media and works in any standard 4. 5" x 20" filter housing. SPECIFICATIONS Watts RC C BB 20 50 Empty Refillable Cartridge Manufacturer Watts Model Number RC C BB 20 50 Dimensions 20" x 4. 5" Housing Type Standard Big