Dow Filmtec Reverse Osmosis Membrane

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ITEM# 13959861
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ITEM#: 13959861

DOW RO Membranes produce high quality water and are designed for use in Home RO Systems. Advanced membrane technology and automated fabrication allow Dow to precisely produce each element to the highest quality standard.

  • 100-percent quality check and integrity tested
  • High quality RO membranes with consistent performance
  • Fits all standard 2 inch x 12 inch home RO membrane housings
  • Compatibale with most standard RO Systems on the market.
  • Does not replace watts premier yellow RO membranes as the watts yellow membranes are equipped with internal check valve


Assembly Assembled
Dimensions 16 inches Long X 6 inches Wide X 4 inches High
Model Number TW30-1812-24 RO
Country of Origin United States

Questions & Answers

  • Q:

    "I want to replace my Membrane on my watts RoTFM_5SV ,will the # 13959861 be syed as a replacement?"

    • A:

      Hello brookside, this membrane is not recommended for the Watts unit that you have. This membrane is designed for older style units that have the needed check valve in one of the elbows of the membrane vessel. Have a great day!

  • Q:

    "can extra ro membranes be stored in refigerator and for how long?"

    • A:

      Thank you for your interest in the Dow Filmtec Reverse Osmosis Membrane. New membranes that are unused and still in the packaging can last a while (a year) just being stored in the house in a general temperature controlled area. (not the garage) Used membranes can be removed from the RO system and placed in a Ziploc bag. Place some RO Water in the Ziploc bag and put in the refrigerator. These membranes should be good for about three to four months like this. Much longer and you really start increasing the probability of some bacteriological growth on the membrane. If one of these old membranes are inserted back in to the RO, it could foul the RO system and the tank.

  • Q:

    "What is the gallon per day rating?"

    • A:

      Thank you for your interest. This item has a GPD of 24 gallons per day. Please feel free to contact us again with any further questions.

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Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
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Standard Return Policy:

Items must be returned in new or unused condition and contain all original materials included with the shipment. More Details

FINAL SALE EXCLUSION: Items marked as FINAL SALE are not returnable unless the problem you experience is the result of our error.

For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.