Filmtec (TW30-2521) Tap Water Membrane 325 GPD 2.5" X 21" Isopure Water (ISO-WH1-20B) Single Stage 20" Big Blue Boy Whole House Water Filter 🔧 Pro tip: Pleated filters

🔧 Pro tip: Pleated filters like the Harmsco 801-5-20 can often be rinsed and reused 2-3 times before replacement

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5" diameter x 10" length fits standard 10-inch Big Blue housings

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Filmtec (TW30-2521) Tap Water Membrane 325 GPD 2.5" X 21" Isopure Water (ISO-WH1-20B) Single Stage 20" Big Blue Boy Whole House Water Filter 🔧 Pro tip: Pleated filtersThe Filmtec TW30 2521 is a high efficiency reverse osmosis membrane engineered for small commercial tap water applications, delivering 325 gallons per day at 99. 5% stabilized salt rejection. This 2. 5" x 21" element provides 13 square feet of active membrane surface area, optimized for systems purifying less than one gallon per minute with industry leading reliability and energy efficiency. SPECIFICATIONS TW30 2521 Core Performance Metrics Daily