Harmsco (HB-20-50W) 20"X4.5" Big Blue "Calypso Blue" Pleated Sediment 50 Micron Filter Test Kits This assembly is critical for

This assembly is critical for maintaining accurate chemical dosing in residential and light commercial water treatment applications

The cartridge shell itself can be reused indefinitely

💧 Low Pressure Drop Design

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Harmsco (HB-20-50W) 20"X4.5" Big Blue "Calypso Blue" Pleated Sediment 50 Micron Filter Test Kits This assembly is critical forHarmsco Filtration HB 20 50W Calypso Blue Pleated Sediment Filter 20"4. 5" Big Blue polyester cartridge engineered for washable, reusable sediment control at 50 micron Cleanable & Reusable High Dirt Capacity 50 Micron Pleated Big Blue Standard The Harmsco HB 20 50W uses pleated polyester media to capture sediment down to 50 micron while delivering exceptional dirt holding capacity and extended service life. Built for 20"4. 5" Big Blue housings, this