US Water Big Blue Softening Resin Cartridge 4.5" x 20" | USWF-4520-SF

4.5" x 20" Big Blue Replacement Softening Cartridge For Hardness Reduction

• Ideal Cartridge to Install Pre-RO to Lower Hardness
• 6,200 Grains Capacity
• 3 GPM Design flow rate
• Fits Most 4.5” x 20” Big Blue Filter Housings
• Temperature Range - 40°F (5°C) to 100°F (38°C)
• Pressure Range - 20 PSI (1.4 bar) to 125 PSI (8.6 bar)