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Membranes

Replacement RO Membranes for Water Filtration Systems


We provide AppIied Membranes, Inc., Filmtec, LG, and GE replacement RO membranes used for home and business RO water filtration systems. At wateranywhere, we stock a large inventory of membrane elements from a variety of manufacturers that can fit various systems. Our products are on-hand and ready for immediate shipment.

Reverse osmosis is not only an efficient and cost-effective membrane separation process, but with proper care, these systems deliver an exceptional return on investment. RO membrane elements are recommended to be replaced every 24 months.

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  • $275.00 - $275.00
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    4" x 40" | 2,900 GPD | 150 PSI | Low Energy RO Membrane | Applied Membranes

    M-T4040ALE
    In Stock for Immediate Shipment

    4" x 40" Low Energy Reverse Osmosis Membrane | Tap or Brackish Water | 2,900 GPD at 150 PSI Applied Membranes Low Energy (Low Pressure) RO Membr...

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    $275.00 - $275.00
    $275.00
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    4" x 40" | 2,860 GPD | 100 PSI | XLE Extra-Low Energy RO Membrane | Applied Membranes

    M-T4040AXLE
    In Stock for Immediate Shipment

    4" x 40" Extra-Low Energy Reverse Osmosis Membrane | Tap or Brackish Water | 2,860 GPD at 100psi AMI Extra-Low Energy (Low Pressure) XLE RO Membr...

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    $280.00 - $280.00
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  • $270.00 - $270.00
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    4" x 40" | 3,000 GPD High Flow Commercial Reverse Osmosis RO Membrane | Applied Membranes

    M-T4040AHF
    In Stock for Immediate Shipment

    4" x 40" High Flow Reverse Osmosis Membrane | Tap or Brackish Water | 3,000 GPD RO Membrane AMI commercial RO membrane elements produce high qua...

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    $270.00 - $270.00
    $270.00
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    $270.00
  • $281.99 - $281.99
    $281.99
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    4"x40" | 2,400 GPD | Tape Wrapped | DuPont FilmTec RO Membrane (Replaces TW30-4040)

    TW30 PRO-4040
    In Stock for Immediate Shipment

    DUPONT FILMTEC™  TW30 PRO-4040 Commercial Reverse Osmosis Membrane Element  Direct Replacement for FilmTec TW30-4040, which is now obsolete.  ...

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    $281.99 - $281.99
    $281.99
    $281.99 - $281.99
    $281.99
  • $293.40 - $293.40
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    $293.40

    4"x40" | 2,750 GPD | Low Energy | Tape Wrap | FilmTec Membrane | Replaces XLE-4040

    XLE PRO-4040
    In Stock for Immediate Shipment

    FILMTEC™ XLE PRO-4040 Brackish Water Reverse Osmosis Membrane Element DUPONT FILMTEC™ XLE PRO-4040 Elements offer better system performance an...

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    $293.40 - $293.40
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    $293.40
  • $461.25 - $461.25
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    4"x40" Hollow Fiber UF 0.9 Membrane Element (1,300 to 3,900 GPD)

    M-U4040HF09
    In Stock for Immediate Shipment

    Hollow Fiber Ultrafiltration (UF) Membrane Elements AMI hollow fiber ultrafiltration (HF UF) membrane elements provide reliable rejection of m...

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    $461.25 - $461.25
    $461.25
    $461.25 - $461.25
    $461.25
  • $265.00 - $265.00
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    4" x 40" | 2,400 GPD Commercial Reverse Osmosis RO Membrane | Applied Membranes

    M-T4040A
    In Stock for Immediate Shipment

    4" x 40" Reverse Osmosis Membrane | Tap or Brackish Water | 2,400 GPD RO Membrane AMI commercial RO membrane elements produce high quality water...

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    $265.00 - $265.00
    $265.00
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    $265.00
  • $299.92 - $299.92
    $299.92
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    4"x40" | 2,500 GPD | Low Energy| Fiber Wrapped | DuPont FilmTec (LC LE PRO-4040 Replaces DOW LC LE-4040)

    LC LE PRO-4040
    In Stock for Immediate Shipment

    FILMTEC™ LC LE PRO-4040 Low Pressure (Low Energy) Commercial RO Membrane Element Direct Replacement for DOW FilmTec LC LE-4040 FilmTec LC LE P...

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    $299.92 - $299.92
    $299.92
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    $299.92
  • $275.00 - $275.00
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    4" x 40" | 3,000 GPD | FRP Wrapped |High Flow Commercial Brackish RO Membrane | Applied Membranes

    M-B4040AHF
    In Stock for Immediate Shipment

    4" x 40" High Flow Brackish Water Reverse Osmosis Membrane | Fiberglasssed Shell | 3,000 GPD AMI commercial thin film BWRO elements are wrapped ...

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    $275.00 - $275.00
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    4" x 40" | 2,400 GPD | FRP Wrapped | Commercial Brackish RO Membrane | Applied Membranes

    M-B4040A
    In Stock for Immediate Shipment

    4" x 40" Brackish Water Reverse Osmosis Membrane | Fiberglasssed Shell | 2,400 GPD BWRO AMI commercial thin film BWRO elements are wrapped in a ...

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    $265.00 - $265.00
    $265.00
    $265.00 - $265.00
    $265.00
  • $440.00 - $440.00
    $440.00
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    4"x40" | 1950 GPD | 99.6% Salt Rejection | Seawater RO Membrane | Applied Membranes

    M-S4040A
    In Stock for Immediate Shipment

    AMI 4x40 Seawater Desalination Reverse Osmosis MembranesFor Watermakers and Land-and-Sea Based Seawater Desalinators Highest Salt Rejection S...

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    $440.00 - $440.00
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  • $277.10 - $277.10
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    4"x40" | 2,400 GPD | Fiber Wrapped | DOW FilmTec RO Membrane | Replaces BW30-4040 & LC HR-4040

    BW30 PRO-4040
    In Stock for Immediate Shipment

    DuPont FILMTEC™ BW30 PRO-4040 Brackish Water Reverse Osmosis Membrane Element (Direct Replacement for DOW FilmTec BW30-4040 & LC HR-4040 )...

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    $277.10 - $277.10
    $277.10
    $277.10 - $277.10
    $277.10
  • $300.00 - $300.00
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    4" x 40" Nanofiltration Membrane | NF 90| 90% Salt Rejection

    M-N4040A9
    In Stock for Immediate Shipment

    4" x 40" Nanofiltration Membrane | NF9 - 90% Salt Rejection | 97% Hardness Rejection Applied Membranes NF9 spiral wound nanofiltration elements ...

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    $300.00 - $300.00
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  • $325.00 - $325.00
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    4" x 21" | 1,025 GPD | 100 PSI | XLE Extra-Low Energy RO Membrane | Applied Membranes

    M-T4021AXLE
    In Stock for Immediate Shipment

    4" x 21" Extra-Low Energy Reverse Osmosis Membrane | Tap or Brackish Water | 1,025 GPD at 100 PSI AMI Extra-Low Energy (Low Pressure) XLE RO Memb...

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    $325.00 - $325.00
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  • $456.40 - $456.40
    $456.40
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    4"x40" | 1,950 GPD | 99.4% Salt Rejection | Watermaker | FilmTec SW30-4040 Seawater Membrane

    SW30-4040
    In Stock for Immediate Shipment

    DuPont FILMTEC SW30-4040 Seawater RO Elements for Watermakers and Marine Systems (Replaces SW30HRLE-4040) DuPont DOW FILMTEC SW30-4040 element...

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    $456.40 - $456.40
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    $456.40 - $456.40
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  • $290.00 - $290.00
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    4" x 40" | 2450 GPD | 150 psi | 99.4% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA1-4040)

    ESPA1-LD-4040
    In Stock for Immediate Shipment

    Hydranautics ESPA1-LD-4040 4" x 40" Membrane Element Hydranautics ESPA1-LD-4040 is used in the treatment of low TDS waters to produce potable wat...

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    $290.00 - $290.00
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  • $422.17 - $422.17
    $422.17
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    4"x40" | 97% Salt Rejection | 2,000 GPD | FilmTec NF90 Element

    NF90-4040
    Ships in 7 days

    DOW FILMTEC™ NF90-4040 Nanofiltration (NF) Membrane Elements for Commercial Systems The DOW FILMTEC NF90-4040 membrane elements provide high p...

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    $422.17 - $422.17
    $422.17
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  • $275.00 - $275.00
    $275.00
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    $275.00

    4" x 40" | 2,900 GPD at 150 PSI | FRP Wrapped | Low Energy Commercial RO Membrane | Applied Membranes

    M-B4040ALE
    In Stock for Immediate Shipment

    4" x 40" Low Energy Brackish Water RO Membrane | Fiberglasssed Shell | 2900 GPD BWRO LE AMI Low Energy (Low Pressure) RO Membrane elements are s...

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    $275.00 - $275.00
    $275.00
    $275.00 - $275.00
    $275.00
  • $422.17 - $422.17
    $422.17
    $422.17 - $422.17
    $422.17

    4"x40" | 97% Salt Rejection | 2,500 GPD | FilmTec NF270 Element

    NF270-4040
    In Stock for Immediate Shipment

    DOW FILMTEC NF270-4040 Nanofiltration (NF) Membrane Elements for Commercial Systems DOW FILMTEC NF270-4040 Elements are ideal for remo...

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    $422.17 - $422.17
    $422.17
    $422.17 - $422.17
    $422.17
  • $440.00 - $440.00
    $440.00
    $440.00 - $440.00
    $440.00

    4"x21" | 800 GPD | 99.6% Salt Rejection | Watermaker Seawater RO Membrane | Applied Membranes

    M-S4021A
    In Stock for Immediate Shipment

    AMI 4x21 Seawater Desalination Reverse Osmosis Membranes For Watermakers and Land-and-Sea Based Seawater Desalinators Highest Salt Rejection Seaw...

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    $440.00 - $440.00
    $440.00
    $440.00 - $440.00
    $440.00
  • $339.04 - $339.04
    $339.04
    $339.04 - $339.04
    $339.04

    4"x21" | 900 GPD | Tape Wrapped | DOW FilmTec RO Membrane

    TW30-4021
    In Stock for Immediate Shipment

    DOW FILMTEC™ TW30-4021 Commercial Reverse Osmosis Membrane Element DOW FILMTEC TW30-4021 Reverse Osmosis (RO) Elements offer high qua...

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    $339.04 - $339.04
    $339.04
    $339.04 - $339.04
    $339.04
  • $400.67 - $400.67
    $400.67
    $400.67 - $400.67
    $400.67

    4" x 38" | 2,750 GPD | 100 PSI | XLE Extra-Low Energy RO Membrane | Applied Membranes

    M-T4038AXLE
    In Stock for Immediate Shipment

    4" x 38" Extra-Low Energy Reverse Osmosis Membrane | Tap or Brackish Water | 2,750 GPD at 100psi4x38 RO Membrane for Reverse Osmosis Water Treatm...

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    $400.67 - $400.67
    $400.67
    $400.67 - $400.67
    $400.67
  • $295.00 - $295.00
    $295.00
    $295.00 - $295.00
    $295.00

    4" x 40" Nanofiltration Membrane | NF 50| 50% Salt Rejection

    M-N4040A5
    In Stock for Immediate Shipment

    4" x 40" Nanofiltration Membrane | NF5 - 50% Salt Rejection | 97% Hardness Rejection NF5 spiral wound nanofiltration elements are ideal for remo...

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    $295.00 - $295.00
    $295.00
    $295.00 - $295.00
    $295.00
  • $325.00 - $325.00
    $325.00
    $325.00 - $325.00
    $325.00

    4" x 21" | 1,148 GPD | 150 PSI | Low Energy RO Membrane | Applied Membranes

    M-T4021ALE
    In Stock for Immediate Shipment

    4" x 21" Low Energy Reverse Osmosis Membrane | Tap or Brackish Water | 1,148 GPD at 150 PSI AMI Low Energy (Low Pressure) RO Membrane elements a...

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    $325.00 - $325.00
    $325.00
    $325.00 - $325.00
    $325.00
  • $410.00 - $410.00
    $410.00
    $410.00 - $410.00
    $410.00

    4" x 40" Ultrafiltration Membrane | Polyacrylonitrile (PAN) UF | 20,000 MWCO

    M-U4040PAN
    In Stock for Immediate Shipment

    4" x 40" Ultrafiltration Membrane (UF Membrane) | Polyacrylonitrile PAN Membrane Elements Applied Membranes polyacrylonitrile (PAN) spiral woun...

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    $410.00 - $410.00
    $410.00
    $410.00 - $410.00
    $410.00
  • $425.00 - $425.00
    $425.00
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    $425.00

    4" x 40" Ultrafiltration Membrane | Polyethersulfone (PES) UF | 10,000 MWCO

    M-U4040PES
    In Stock for Immediate Shipment

    4" x 40" Ultrafiltration Membrane (UF Membrane) | Polyethersulfone PES Membrane Elements Applied Membranes polyethersulfone (PES) spiral wound ...

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    $425.00 - $425.00
    $425.00
    $425.00 - $425.00
    $425.00
  • $320.00 - $320.00
    $320.00
    $320.00 - $320.00
    $320.00

    4" x 40" | 2000 GPD | 150 psi | 99.6% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA2-4040)

    ESPA2-LD-4040
    Ships in 7 days

    Hydranautics ESPA Series RO Membrane ElementsESPA2-LD-4040 Ultra-Low Energy 4" x 40" Reverse Osmosis Membrane Element Hydranautics ESPA2-LD-4040 ...

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    $320.00 - $320.00
    $320.00
    $320.00 - $320.00
    $320.00
  • $437.50 - $437.50
    $437.50
    $437.50 - $437.50
    $437.50

    4"x40" Hollow Fiber UF 1.5 Membrane Element (860 to 2,580 GPD)

    M-U4040HF15
    In Stock for Immediate Shipment

    Hollow Fiber Ultrafiltration (UF) Membrane Elements AMI hollow fiber ultrafiltration (HF UF) membrane elements provide reliable rejection of m...

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    $437.50 - $437.50
    $437.50
    $437.50 - $437.50
    $437.50
  • $320.00 - $320.00
    $320.00
    $320.00 - $320.00
    $320.00

    4" x 21" | 900 GPD Commercial Reverse Osmosis RO Membrane | Applied Membranes

    M-T4021A
    In Stock for Immediate Shipment

    4" x 21" Reverse Osmosis Membrane | Tap or Brackish Water | 900 GPD RO Membrane AMI commercial RO membrane elements produce high quality water f...

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    $320.00 - $320.00
    $320.00
    $320.00 - $320.00
    $320.00
  • $315.00 - $315.00
    $315.00
    $315.00 - $315.00
    $315.00

    4" x 14" | 525 GPD Commercial Reverse Osmosis RO Membrane | Applied Membranes (Replaces TW30-4014)

    M-T4014A
    Ships in 5 Days

    4" x 14" Reverse Osmosis Membrane | Tap or Brackish Water | 525 GPD RO Membrane AMI commercial RO membrane elements produce high quality water f...

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    $315.00 - $315.00
    $315.00
    $315.00 - $315.00
    $315.00
  • $290.00 - $290.00
    $290.00
    $290.00 - $290.00
    $290.00

    4" x 40" | 2350 GPD | 100 psi | 99.2% Rej. | Hydranautics ESPA Ultra-Low Pressure Membrane (Replaces ESPA4-4040)

    ESPA4-LD-4040
    Ships in 7 days

    Hydranautics ESPA4-LD-4040 4" x 40" Membrane ElementCombining energy efficiency with high rejection Hydranautics ESPA4-LD-4040 is the lowest feed...

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    $290.00 - $290.00
    $290.00
    $290.00 - $290.00
    $290.00
  • $282.24 - $282.24
    $282.24
    $282.24 - $282.24
    $282.24

    4"x40" Brackish Water | 2,500 GPD | 150 psi | 99.5% Rej | 85 ft2 | LG Chem RO Membrane

    LG BW 4040 ES
    In Stock for Immediate Shipment

    LG Chem Nano H2O LG BW 4040 ES Brackish Water (BWRO) Reverse Osmosis Membrane LG BW 4040 ES Energy Saving Brackish Water RO membranes offer high ...

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    $282.24 - $282.24
    $282.24
    $282.24 - $282.24
    $282.24
  • $436.88 - $436.88
    $436.88
    $436.88 - $436.88
    $436.88

    4" x 40" | PVDF Microfiltration Membrane Element | Polyvinylidene Fluoride

    M-M4040VDF
    In Stock for Immediate Shipment

    4" x 40" Microfiltration Membrane (MF Membrane) | Polyvinylidene Fluoride (PVDF) AMI polyvinylidine fluoride spiral wound microfiltration elemen...

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    $436.88 - $436.88
    $436.88
    $436.88 - $436.88
    $436.88
  • $282.24 - $282.24
    $282.24
    $282.24 - $282.24
    $282.24

    4"x40" Brackish Water | 2,700 GPD | 100 psi | 99.0% Rej | 85 ft2 | LG Chem RO Membrane

    LG BW 4040 UES
    In Stock for Immediate Shipment

    LG Chem Nano H2O LG BW 4040 UES Brackish Water (BWRO) Reverse Osmosis Membrane LG BW 4040 UES Ultra Energy Saving Brackish Water RO membranes off...

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    $282.24 - $282.24
    $282.24
    $282.24 - $282.24
    $282.24
  • $635.70 - $635.70
    $635.70
    $635.70 - $635.70
    $635.70

    4"x40" | Full-Fit | Heat-Sanitizable | 2,400 GPD | FilmTec RO

    HSRO-4040-FF
    Ships in 5 Days

    DOW FILMTEC™ HSRO-4040-FF Heat-Sanitizable Full-Fit RO Elements DOW FILMTEC™ HSRO-4040-FF Elements are heat-sanitizable reverse osmosis elemen...

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    $635.70 - $635.70
    $635.70
    $635.70 - $635.70
    $635.70
  • $280.00 - $280.00
    $280.00
    $280.00 - $280.00
    $280.00

    4" x 40" | 2,860 GPD at 100 PSI | FRP Wrapped | Extra-Low Energy Commercial RO Membrane | Applied Membranes

    M-B4040AXLE
    In Stock for Immediate Shipment

    4" x 40" Extra-Low Energy Brackish Water RO Membrane | Fiberglasssed Shell | 2,860 GPD BWRO XLE Applied Membranes XLE Extra-Low Energy (Ultra-Lo...

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    $280.00 - $280.00
    $280.00
    $280.00 - $280.00
    $280.00

Home & Business Reverse Osmosis Membrane Replacements


At wateranywhere, we pride ourselves on our ability to serve any water filtration needs from home water purification to a variety of commercial applications including hotels and resorts, petrochemical, and food and beverage production.


Designed for point of use (POU) installation under the sink or counter, these RO filtration systems supply clean drinking water directly to a faucet, spigot, or refrigerator. We offer Applied Membranes, LG, Filmtec, and GE residential RO replacement membranes that fit a variety of reverse osmosis filtration systems. Consult this chart for a listing of applicable membrane sizes for various models.

Whole House RO Membrane Replacements


These systems are designed for point of entry (POE) installation to provide water free from contaminants to the entire building. This system connects to the main water line. We offer whole house RO membrane replacements from a variety of brand names.

Commercial RO Membranes


Replacement RO membranes used in a variety of business applications are typically run at higher pressures for optimum performance and higher rejection. We offer replacement membrane elements for water treatment systems used for water stores, larger facilities, carwashes, and manufacturing.

Reverse Osmosis Seawater Desalination


Seawater desalination forces seawater through a semipermeable membrane removing most of the impurities. This technology is used in several markets from oil and gas, to specialty applications. wateranywhere supplies RO replacement membranes used in seawater desalination used for converting seawater into usable, drinkable water.

MF, UF, NF, and RO Membranes Separation Processes Explained


Membrane elements are used in the membrane separation technology processes; all of which serve different levels of demineralization and decontamination. The different processes of separation refer to the pore size and type of semi-permeable membranes used to remove organic matter from the water. Microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO) membranes are explained below:

Microfiltration Membrane Separation


(pores equal 0.1 micron)- A pressure-driven filtration process which removes many microorganisms and suspended solid materials but allows smaller ions, particles, and many viruses to pass through.

Learn More

Ultrafiltration Membrane Separation


(pores equal to 0.01 micron)- UF is a pressure-driven separation process which removes larger microorganisms and suspended particulate matter as well as bacterias and most viruses. However, cannot remove dissolved substances without first absorbing them using a coagulate.

Learn More

Nanofiltration Membrane Separation


(pores equal 0.001 micron)- This type of filtration membrane blocks even smaller organic molecules and almost all viruses, as well as most organic matter and salts. NF is often used to soften hard water because it can remove divalent ions, which cause hard water.

Learn More

Reverse Osmosis (RO) Membrane Separation


(0.0001 micron)- RO is one of the most extensive and efficient water filtration methods. A RO system uses a pump to force water through the membrane. Contaminants remain on one side of the membrane (wastewater later drained) resulting in pure water collection on the other. Reverse osmosis removes 98% of harmful minerals including fluoride, salts, sediment, arsenic, chlorine, VOCs, herbicides, pesticides, bacteria and viruses.

Replacement Membranes & Components for Reliable Water Treatment


At wateranywhere, we know how vital clean, quality water is, which is why we take pride in offering the best in breed water filtration systems and RO replacement membranes. We offer reliable service and flexibility to best meet our customers’ needs including quick shipping, and affordable installation. We offer same day shipping on orders received before 3 PM PST.

Contact us to determine the best RO replacement membrane for your application.

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