SKU: 35332021525

4" x 40" | 2,400 GPD Commercial Reverse Osmosis RO Membrane | Applied Membranes

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Description

4" x 40" | 2,400 GPD Commercial Reverse Osmosis RO Membrane | Applied Membranes4" x 40" Reverse Osmosis Membrane Tap or Brackish Water 2,400 GPD RO Membrane AMI commercial RO membrane elements produce high quality water from tap or brackish water in small commercial RO systems, and are among the finest in the industry. With hundreds of thousands of membranes in operation in water filtration systems world wide, AMI membranes have earned a reputation of delivering consistent, reliable, and long lasting performance, making AMI


4" x 40" Reverse Osmosis Membrane | Tap or Brackish Water | 2,400 GPD RO Membrane

AMI commercial RO membrane elements produce high quality water from tap or brackish water in small commercial RO systems, and are among the finest in the industry. With hundreds of thousands of membranes in operation in water filtration systems world-wide, AMI membranes have earned a reputation of delivering consistent, reliable, and long lasting performance, making AMI Membranes the natural choice for use in small commercial RO systems. AMI Small Commercial RO Membranes are constructed of tap water TFC (thin film composite) membrane material and fit standard PVC and Stainless Steel RO Membrane Housings.

AMI Membranes are 100% Quality and Performance Tested in their ISO 9001:2015 Certified Facilities.

Specifications for M-T4040A

AMI Part Number: M-T4040A
Membrane Size (Nominal): 4 x 40
Membrane Dimensions: 3.9"Dia. x 40"L
Flow Rate: 2,400 GPD (9,084 LPD)
Applied Pressure: 225 psi (1.6 MPa)
Stabilized Salt Rejection: 99.5%
For Housing: Standard 4" x 40"
Outer Wrap: Tape Wrapped
Membrane Type: Tap or Brackish Water
Membrane Sheet: TFC (Thin Film Composite)
Element Type: Spiral Wound
Feed Water Test Temperature: 77°F (25°C)
Single Element Recovery: 15%
Chlorine Tolerance: 0
Feed water pH Range: 2-11
End Style: Male PWT (Stinger Style)
Can Replace:





 FilmTec TW30-4040
Hydranautics CPA2-4040
Hydranautics CPA5-LD-4040
GE/Desal AG4040TM
GE/Desal AG4040TF
Manufacturer: Applied Membranes, Inc.
Country of Manufacture: United States (USA)

Note: Performance specifications based on 2,000 mg/l sodium chloride, 225 psi (1.6 MPa) applied pressure, 77ºF (25ºC) feed water temperature, pH 8 and the recovery listed in the table above. Element permeate flow may vary ± 20%.

Features of AMI Tap Water / Brackish Water RO Membranes

  • High Rejection & Flow Rate
  • Manufactured in our ISO 9001:2015 Certified Facilities
  • 100% Performance and Quality Tested
  • Backed by our Experienced Technical Support Staff
  • High Quality for Consistent and Reliable Performance
  • Uses the most advanced membrane film technology and manufacturing processes
  • Standard dimensions to fit in commonly available housings

Applications for AMI Commercial RO Membranes

  • Restaurants
  • Aquariums
  • Whole House (Residential)
  • Office
  • Institutions
  • Hotels
  • Hospitals
  • Disaster Relief
  • Spot Free Rinse/Car Wash
  • Labs
  • Pharmaceutical
  • Humidification
  • Misting
  • Manufacturing
  • Rinse Water
  • Bottled Water
  • Water stores
  • Beverage
  • Food Processing
  • Ice Makers
  • Commercial Water Treatment
  • Ice Makers
  • Tap Water
  • Brackish Water
  • Wide Variety of Other Applications

Physical Dimensions of M-T4040A:

Total Length (L):

40 In. (101.6 cm)

Membrane Length (I):

38 In. (96 cm)

Diameter (D):

3.9 In. (9.9 cm)

PWT (P):

0.75 In. (1.9 cm)

Replacement Compatibility for AMI 4 X 40 RO MEMBRANES

Applied Membranes M-T4040A membrane elements can be used as direct replacement for many industry-standard 4x40 size RO elements with 3/4" male product water tubes ("stinger style") which are rated at 225psi. These include DuPont DOW FilmTec TW30-4040; GE Desal AG4040TM, AG4040TF; and Hydranautics CPA2-4040 or CPA5-LD-4040.

If you do not see your system listed or wish to learn more about compatibility, please contact us. Our certified water treatment experts will be happy to discuss your application. To ensure prompt and accurate information, please include as much information about your system as possible, such as: model, manufacturer, model of membranes being replaced, any available. product manuals or literature associated with your system, and photographs of your system or membranes.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35332021525

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4.3 ★★★★★
Based on 29 reviews
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Verified Purchase
MrsBrownlee
Cuba, US
★★★★★ 5
Favorite Couch Ever! 💗
Color: Dark Grey, Size: 7 Seat, Color: Dark Grey, Size: 7 Seat
This couch far exceeded my expectations. It was on sale for $750 when I purchased it which is a steal! The cushions are EXTREMELY soft and comfortable. Its appearance is very modern and saves up so much space! The height is perfect and it easily folds back to make it not like a day bed. Personally we leave it like this especially with a baby because it gives us a lot of room to stretch out and again SUPER COMFORTABLE. The fabric is phenomenal and very easy to clean! 10/10 definitely recommend! Would purchase again! The storage area is perfect for pillows and blankets as the ottoman can hold things as well as the chase WHICH can be accessed while the couch is in “day bed mode” as I say. Nothing but good things to report!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
J
Verified Purchase
Jazzie
Pawtucket, US
★★★★★ 5
Nice couch for the price
Color: Black, Size: 7 Seat, Color: Black, Size: 7 Seat
Nice and firm I was able to put it up by myself in about three hours. It is really cute The material is soft. I really like it. It was super easy to put together. It came in 4 different boxes, I was worried because people said they got the boxes on different days luckily, I got the whole couch the same day and put together that night. I’m happy with this purchase. Can’t wait to sit on it and watch TV. I just wanna give it a few days to let the seat cushions recover.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
K
Verified Purchase
kayla c
Battle Creek, US
★★★★★ 5
Love the storage and pull-out
Color: Dark Grey, Size: 7 Seat, Color: Dark Grey, Size: 7 Seat
The size is great and fits nicely in the corner without feeling too bulky, but still has plenty of seating. The dark grey color looks clean in person and matches my space really well — not too light, not too dark. The pull-out part is honestly one of my favorite features. It slides out pretty smoothly and turns into a big lounging area or bed. I’ve already used it to relax and watch TV and it’s really comfortable. The storage compartment is also bigger than I expected — I can fit blankets and a few extra things in there easily, which helps keep everything more organized. Comfort-wise, I’d say it’s medium-firm. Not super soft like a cloud couch, but still comfortable enough for everyday use. The cushions seem to hold their shape pretty well so far. Assembly took a bit of time and it’s easier with two people, but overall it wasn’t too complicated. Once it’s set up, it feels pretty sturdy. If I had to nitpick, the cushions do shift a little after sitting for a while, so you may need to adjust them occasionally. But for the price, I think that’s pretty normal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
J
Verified Purchase
Jennifer Weddle
Houston, US
★★★★★ 4
very nice for the money
Color: Dark Grey, Size: 5 Seat, Color: Dark Grey, Size: 5 Seat
Very comfy. The color is perfect. The back pillows do shift when leaning against them but a throw pillow or two helps comfort. The material is soft. And it was fairly easy to assemble with 2 people.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
Epic. Works great.
Color: Black
Works great every day. Super powerful and smooth compared to my old battery powered one. The shaft is much thicker and is more securely positioned so I can't imagine it becoming tweaked off balance like my old one. And it comes with an extra mixer attachment! I imagine I've put that away for a long time, but we'll see. Easy to turn on and off with one hand, but I can imagine it being less easy than a simple push button for someone with decreased thumb dexterity or mobility. I do wish the lowest speed was slightly lower, but it hasn't caused any splashing or other detriment. The speed adjustment is very smooth and power is abundant. Love the stand, Usb c charge port is solid, battery life is excellent.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026

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