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Replacement Cartridge and Post Filter for Hardless NG3 Whole House Water Filter And Water Conditioner Life is easier when you buy a replacement cartridge and post-filter together. BUY 2 for $128, 3 for $192. The cartridge and post-filter each last approximately 6 months. It’s easy to swap out your existing cartridge and post-filter. Comes with instructions for replacing the cartridge and post filter. The cartridge contains ~1lbs of Slow Phos crystals which change the structure of the minerals in the water to reduce scale formation and corrosion. The post-filter is made of microplastic fibers that filter up to 2 microns.
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🇺🇸 Ship from USA · On Agora since 2025
$74.00