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Replace WP5BB20P cartridge every 3 to 6 months depending on water quality and household usage
🔧 Pro tip: If you're replacing a filter that's been in service for more than a year
available separately
The 1" FPT threading integrates directly with standard plumbing without adapters
Omnipure - ELF PHOS - 12.5" x 4" ELF-Series ALL Phosphate Filter; Scale Inhibitor 20 inch x 4.5 inch Big Blue Filters2677 Replace WP5BB20P cartridge every 3The Omnipure ELF PHOS (ELF Series) is a 12. 5" x 4" phosphate filter cartridge designed to protect pipes, fixtures, and appliances from scale buildup and corrosion through slow dissolving phosphate crystal technology. Rated at 10 microns with a 1. 67 GPM flow rate, this specialty filter is ideal for inline protection in residential and light commercial water systems. SPECIFICATIONS ELF PHOS Filter Specs Dimensions 12. 5" 4" ELF Series standard size
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