PureDrop CUW4 Ultra-filtration Under-Sink 3-Stage Prefilter Replacement Water Filter Cartridges (no membrane included)

First 3-stage replacement water filters for PureDrop CUW4, including PP sediment filter, carbon block filter and ultra micron granular carbon filter. The unique design of the integrated water route reduces installation time dramatically, and the click-on filter installation ensures easy installation and maintenance. Suggested replacing every 6 months to 12 months based on your using condition and source water quality.