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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 )
Replaces LP-4021 FilmTec DOW / DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM-4021LP )
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Replaces LP-4021 FilmTec DOW / DuPont Membranes 150 PSI 1000 GPD 4 x 21 inch ( MEM-4021LP )

Marsoni M251S
Sale price$112.50
Pay 4 payments of $28.12 a month.Shop Pay
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
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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
4.4 ★★★★★
Based on 1875 reviews
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Product Reviews
L
Verified Purchase
Lynie
Los Angeles, US
★★★★★ 5
Fun
My dogs love these ducks. They are pretty durable but I have had three dogs at a time and they all love them. Our new puppy has taken over the duck from my older dog and she is not happy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 17, 2022
K
Verified Purchase
Kiara
Houston, US
★★★★★ 5
Such a favorite we had to buy backups!
My pup LOVES this toy, as well as my roommates pup as well! Found first in a dive bin store, we knew we had to find the seller and get more. So far we have 3 with 2 of those being in circulation and the third as a back up hidden away. We have had to sew a few holes, the nose is a favorite with ours, but otherwise holds up quiet well!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 7, 2022
M
Verified Purchase
ms martyr
New York, US
★★★★★ 5
Saving This For Future Play
This is very similar to an older green platypus dog toy that my puppies managed to destroy in record time. Keeping that in mind I’m going to wait awhile before letting them play with it. It’s adorable and doesn’t deserve an untimely death. They’ve managed to chew holes into two supposedly tough toys in less than a day. Their permanent teeth are coming in so maybe there’s hope for the future.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
A
Verified Purchase
Arlene S. Burke
Houston, US
★★★★★ 1
Not as pictured
From the picture, this duck looked stuffed and full. Instead it is completely flat.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 10, 2026
S
Verified Purchase
SkyGirl
Natrona Heights, US
★★★★★ 4
Not so durable, but still decent
Durable...if you don't have a dog that chews. But it is cute and he LOVED it while it lasted. He just has a vengence against all squeakers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026

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