4021 RO membranes for FLOW RED/GOLD1 PAIR of "Zero Pressure" 4021 RO Membranes designed for Reach iT FLOW RED+. FORCE FILTERS: FOR ANY BRAND WINDOW CLEANING RO SYSTEM . The latest technology for RO MEMBRANES, as installed in Reach iT FLOW RED+, is now available for any existing RO SYSTEM owners ! Using the very latest 'Zero Pressure' technology, these membranes are designed to operate at up to 100PSI for optimal performance, compared to most RO Membranes are designed for commercial
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