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  Top » Catalog » Membranes » RO Tap/Brackish Water Membranes » Brackish Water RO Membranes » M-B4021AHF

4" x 21" High Flow RO Brackish Membrane, 1125 GPD

4" x 21" High Flow RO Brackish Membrane, 1125 GPD
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Model M-B4021AHF
Price $246.00 
Manufacturer AMI
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AMI Brackish Water Reverse Osmosis Membrane Elements for BWRO Systems
AMI 4"x21" Brackish Water Reverse Osmosis BWRO Membranes
for Commercial RO Systems - FRP Wrapped - High Flow

Model Number:


Flow Rate:      

1125 Gal/Day (4258 L/Day)

Stabilized Salt Rejection:


Minimum Salt Rejection:


These commercial thin film BWRO elements are wrapped in a hard shell of FRP for added strength and to withstand higher pressure drops.  AMI Membrane elements are among the finest in the industry.  For the past 30 years AMI Membrane elements have earned the reputation of consistent quality.  AMI Membranes are Made in the USA in their ISO 9001:2015 Certified Facility and are 100% Quality and Performance Tested.

Genuine AMI Membranes ISO USA Quality


Physical Dimensions

M-B4021AHF 4

Total Length (L):

21 In. (53.3 cm)

Membrane Length (I):

19 In. (48 cm)

Diameter (D):

3.9 In.  (9.9 cm)

Specifications for AMI BWRO Fiber-Wrapped Membrane Elements

Note:  Performance specifications based on 2,000 mg/l sodium chloride, 225psi (1.6MPa) applied pressure, 77°F (25°C) feed water temperature, pH 8 and 15% recovery.  Element permeate flow may vary ±15%.  FRP Wrapped.

For more information, please visit this products webpage.

Mfg Info


Manufacturer Info
AMI Homepage
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