★★★★★ 5
Perfect
Perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
Replaces LP-4021 FilmTec DOW / DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM-4021LP )
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Replaces LP-4021 FilmTec DOW / DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM-4021LP )Replaces LP 4021 FilmTec DOW DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM 4021LP ) 1 YEAR MANUFACTURER'S WARRANTY! MADE IN THE UNITED STATES! WE SHIP INTERNATIONALLY, CONTACT US FOR QUOTE! QUANTITY PRICING AVAILABLE! PRIVATE LABELING AVAILABLE! Call: 1 (760) 598 0189 Email: hctivista@gmail. com Hydrocomponent's membranes are equivalent to all major U. S. brands. PLEASE REFERENCE TABLE BELOW Permeate flow and salt rejection based on the
Quick Dispatch:
Your Replaces LP-4021 FilmTec DOW / DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM-4021LP ) orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your Replaces LP-4021 FilmTec DOW / DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM-4021LP ) ships.
Need Help?
Questions about Replaces LP-4021 FilmTec DOW / DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM-4021LP ), sizing, or delivery? We're just an email away.
Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Replaces LP-4021 FilmTec DOW / DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM-4021LP ) in your area.
Get Shipping Estimates
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
You may also like
271 Cat Pump 4.25 GPM 1000 PSI
1472.77
3CP1241 Cat Pump 3.6 GPM 2000 PSI
1521.88
3CP1221 Cat Pump 4.2 GPM 2000 PSI 1725 RPM 316 Stainless Steel
1148.39
5CP6251 Cat Pump
1779.80
2SF29SEEL Cat Pump 2.85 GPM 1200 PSI
663.29
1051 Cat Triplex Positive Displacement Plunger Pump 10 GPM at 2200 PSI / 12.3 GPM at 1800 PSI , 15-Frame , 316 Stainless Steel Manifold , Right-Hand Shaft
3499.99
LP-2540 FilmTec DOW / Dupont 1,000 GPD at 145 PSI 2.5 x 40 inch Membranes
128.62
4.3 ★★★★★
Based on 2488 reviews
Sort
Product Reviews
★★★★★ 4
Great device
Does what it suppose to do. However wish it had a longer cord
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 6, 2023
★★★★★ 5
Great for making IR remote be able to sontrol Amazon Firecube
Great for making IR remote be able to sontrol Amazon Firecube when there is a sound bar in the way of the signal path.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 11, 2025
★★★★★ 5
Second time
So I’ll be honest I bought this a few years back no clue it’s purpose. Now just bought one to do
Go with firebox. I hooked up my mom’s box at Christmas and it’s in a closet. Yes I know not supposed to be in the closet but long story . That is where it is. So this extender device works. I still don’t really understand the purpose but we got the kitchen tv working yay!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2025
★★★★★ 5
Works great
Works great with my fire TV cube Get great Wi-Fi signal in my back bedroom which was only two bars now I get all four bars on Wi-Fi signal
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 21, 2025
