Harmsco (HB-20-20W) 20"X4.5" Big Blue "Calypso Blue" Pleated Sediment 20 Micron Filter Size_UV 1-5GPM VTC technology allows adjustable dosing

VTC technology allows adjustable dosing intervals and durations

📊 Proven Chemistry

Orient filter with flow direction arrow pointing toward outlet or end-use application

5" inline cartridge combining granular activated carbon with half a pound of KDF-55 media for comprehensive chlorine

Sturdy polypropylene standard bushing can be easily replaced without replacing the entire sensor

Harmsco (HB-20-20W) 20"X4.5" Big Blue "Calypso Blue" Pleated Sediment 20 Micron Filter Size_UV 1-5GPM VTC technology allows adjustable dosingThe Harmsco HB 20 20W delivers reliable 20 micron sediment filtration in a durable pleated polyester design built for both whole house and reverse osmosis applications. This 20"x4. 5" Big Blue cartridge fits standard Harmsco housings and offers exceptional dirt holding capacity with the extended surface area of pleated media. SPECIFICATIONS Harmsco HB 20 20W Technical Details Model Number HB 20 20W Dimensions 20" x 4. 5" (Big Blue Standard) Micron