Top 8 4×40 RO Membrane – Replacement Under-Sink Water Filters

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1. Hydronix

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2400 GPD, Hydron BW-4040 Reverse Osmosis Membrane High Performance Commercial Industrial 40 x 4

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Hydronix #ad - Hard fiberglass shell protects membrane and provides outstanding performance. Fits most standard 4x40 Commercial RO membrane housings. 2, 400 gpd, 99. 0% rejection and a minimum rejection rate of 98. 5%. Made in Taiwan. Hydron 2400 gallon per day Commercial Membrane.
BrandHydronix #ad
ManufacturerHydron #ad
Height4 Inches
Length40 Inches
Weight7 Pounds
Width6 Inches
Part NumberBW-4040
ModelBW-4040

2. HID

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Compatible with BW30-4040, RO Membrane Standard 4" x 40" Size, 2800 GPD 99% Salt Rejection

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HID #ad - Hard fiberglass outer Shell allows High Pressure for Outstanding Performance. 99% salt Rejection. Fits standard size 4" Diameter x 40" Long Housing. Commercial Reverse Osmosis Membrane.
BrandHID #ad
ManufacturerHID #ad
Height4 Inches
Length40 Inches
Weight8 Pounds
Width4 Inches
Part NumberRT-4040HF

3. Max Water

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Car Wash, Brackish Water RO Membrane Element-BW-4040 HF 2400 GPD, Commercial Reverse Osmosis Size 4" x 40" Good for Industrial, Whole House & More

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Max Water #ad - Makes it down to 1/10, 000th of a micron. Excessive manganese will damage the RO membranes. Provides stable TDS. Advanced membrane technology with innovative thin layer composite membrane design. Iron and manganese: we recommend using a manganese filter. Generally we require feed water manganese less than 05mg/L. 2400 gallon per day membrane for Commercial Reverse Osmosis systems.
BrandMax Water #ad
ManufacturerMax Water #ad
Height4 Inches
Length40 Inches
Weight9 Pounds
Width4 Inches
Part Number104299

4. APPLIED MEMBRANES INC.

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4x40 Extra-Low Energy Reverse Osmosis Membrane Element | 2860 GPD at 100 psi | 99% Rejection | Replacement Commercial XLE RO Membrane | Applied Membranes USA M-T4040AXLE…

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APPLIED MEMBRANES INC. #ad - 99% salt rejection. Replaces dow filmtec xle-4040, and toray tmh10a, axeon hf4-4040, and most other Industry-Standard "stinger style" 4x40 Size RO Elements which are rated at 100psi.2860 gpd at 100 psi. 100% quality and Performance Tested. Tape Wrapped. Thin film Reverse Osmosis Membrane. Applied membranes 4x40 ro membrane fits standard PVC and Stainless Steel RO Membrane Housings. Made in the usa in iso 9001:2015 quality certified Facility. Ami xle ro membrane elements produce high quality water from tap or brackish water in small commercial RO systems.
BrandAPPLIED MEMBRANES INC. #ad
ManufacturerAPPLIED MEMBRANES INC. #ad
Height4 Inches
Length40 Inches
Weight7.5 Pounds
Width4 Inches
Part NumberM-T4040AXLE
ModelM-T4040AXLE

5. Max Water

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Whole House & more, Reverse Osmosis Keensen 4040 Commercial RO Membrane ULP-4040: 2200GPD size 4" x 40" good for Industrial, Agricultural

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Max Water #ad - 2200 gallon per day membrane for Commercial Reverse Osmosis systems. More consistent performance with less fouling requiring less frequent cleaning and change outs. Advanced membrane technology with innovative thin layer composite membrane design. 100% dry-stored membrane maximizing shelf life. Provides stable TDS.
BrandMax Water #ad
ManufacturerMax Water #ad
Weight8 Pounds
Part Number104293

6. Axeon

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Axeon commercial membrane HF1 4040 4.0" x 40" 2500 GPD HF1-4040

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Axeon #ad - Hf1 series reverse osmosis membrane element low energy high efficiency. Individually tested, highest rejection rates, long life. Low energy, works on lower water pressures 150 psi or above. The highest rated, most reliable membrane on the market! 2500 gpd 4. 0" x 40" to fit standard commercial membrane housings.
BrandAxeon #ad
ManufacturerAxeon #ad
Part NumberFBA_HF1-4040
ModelRF-CM-4040

7. APPLIED MEMBRANES INC.

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4" x 40" Seawater RO Membrane | Watermaker Replacement Membrane | M-S4040A Replaces SW30-4040 | 1950 GPD 4" x 40"

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APPLIED MEMBRANES INC. #ad - Converts seawater to drinking Water in WaterMakers, Shipboard Applications, Land-and-Sea Based Desalinators. Fits any watermaker using standard 4x40 housings, LB 1800, including Farallon 1800c, Farallon 2800c, and LB 4000 Watermakers. Desalinates 1950 gallons per Day at 99. 6% stabilized Salt Rejection. Replaces sw30-4040, ft-mb-sw4x40, and most industry standard 4x40 mebranes. Made in usa - high rejection, high Productivity Seawater RO Membranes Designed for Marine Applications.
BrandAPPLIED MEMBRANES INC. #ad
ManufacturerAPPLIED MEMBRANES INC. #ad
Part NumberM-S4040A
ModelM-S4040A

8. AP

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Replaces SW30-4040, Watermaker Replacement Reverse Osmosis TFC Membrane, 4" x 40" Seawater Desalination 2200 GPD RO Membrane

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AP #ad - High-quality membrane add ap membrane quality and value to your Existing Seawater Desalination Equipment. For use in fits any watermaker using standard 4x40 housings, including Farallon 1800c, Farallon 2800c, LB 1800, and LB 4000 Watermakers. 100% quality Check and Integrity Tested. 100% safe made in usa - high rejection, high productivity Seawater RO Membranes Designed for Marine Applications. Converts seawater to drinking Water in WaterMakers, Shipboard Applications, Land-and-Sea Based Desalinators.
BrandAP #ad
ManufacturerAP #ad