SpectraPure 300GPD Membrane Upgrade Kit:
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Upgrade your existing DUAL RO membrane system to 300 GPD!
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Low Waste Flow Restrictor for a 2:1 waste to product ratio*
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Easy To Install - Membrane, tubing, and flow restrictor with directions for a swift easy install.
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These add on kits contain everything you need to increase the output GPD (gallons per day) of your existing RO System.