EXPRT RF-1034 Whole House Water Filter Cartridge - High Capacity 20" x 4.5" 10 Micron Scale Removal & Prevention Filter with Filtersorb SP3 - Descaler Water Filter

● Salt-Free Whole-House Scale Control - Advanced Filtersorb SP3 Nucleation Assisted Crystallization (NAC) media converts hard-water minerals into harmless micro-crystals, delivering continuous limescale removal & prevention at every tap—an eco-friendly water-softener alternative for city or well water.

● Filtersorb SP3 Beats Polyphosphate - Polyphosphate cartridges merely coat plumbing to prevent new deposits, but Filtersorb SP3 NAC media actually dissolves existing limescale while preventing future build-up, delivering full-spectrum scale removal and prevention for longer-lasting pipes, fixtures, and water-using appliances.
● No Salt, No Backwash, Low Maintenance - Salt-free scale-inhibitor needs no brine, electricity, or drain line; keeps healthy minerals, leaves TDS unchanged, and is safe for septic systems..
● Pair With Catalytic Carbon for Maximum Protection — Placing a whole-house catalytic carbon cartridge(EXPRT RF-1021) before the Filtersorb SP3 anti-scale filter strips chlorine, chloramines, VOCs and hydrogen-sulfide odor, shielding the NAC media from oxidation, extending its 2-3 year lifespan and delivering cleaner, fresher, and scale-free water to every tap.
● High-Flow, Low-Pressure-Drop Design - Maintains 12–15 GPM at 80 PSI while treating up to 130 000 gal or 8–12 months*—perfect for large homes and light commercial use. (May vary depending on the quality of the feed water).
● Universal Point-Of-Entry Fit - Drops into any standard 4.5 × 20 in. “Big Blue” housing, making whole-house anti-scale filter replacement quick and tool-free.

Protect your plumbing, faucet fixtures, water heaters and more from hard-water damage with theEXPRT RF -1034 Filtersorb SP3 scale-control cartridge, a salt-free whole-house water-conditioning filter engineered for limescale removal and long-term scale prevention. Using advanced Filtersorb SP3 Nucleation Assisted Crystallization (NAC) media, this point-of-entry filter transforms dissolved calcium and magnesium into harmless micro-crystals that won’t stick to pipes, faucets, or tankless water heaters—delivering scale-free, great-tasting water without adding sodium or altering TDS. The high-capacity cartridge fits any standard 4.5 × 20 in. “Big Blue” housing and sustains 12–15 GPM with virtually no pressure drop, making it ideal for large households on city or well water. Each cartridge of Filtersorb SP3 media can treat up to 130 000 gallons or 8-12 months* before replacement, slashing maintenance costs compared with traditional salt-based softeners. Enjoy salt-free descaling, corrosion protection, and extended appliance life in one eco-friendly cartridge—search “EXPRT RF-1034 Filtersorb SP3 Scale Removal & Prevention Filter 20 × 4.5 replacement” when it’s time to reorder.

*Service life varies with feed water quality and flow rate.