

💧 Elevate your water game with industrial strength purity—don’t get left behind!
Max Water’s ULP-4040 Commercial RO Membrane is a premium 4" x 40" filtration powerhouse engineered in the U.S. for industrial, agricultural, and whole-house applications. Delivering up to 2600 gallons per day with a 99.35% impurity rejection rate, it features advanced thin film composite technology, a large 90 ft² membrane area, and BPA-free durable construction certified to ISO 9001 standards. Designed for superior performance and longevity, this membrane integrates effortlessly with leading filtration systems, ensuring reliable, high-quality water purification tailored to North American water conditions.

















| ASIN | B0B29NCY45 |
| Best Sellers Rank | #156,512 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,006 in Replacement Under-Sink Water Filters |
| Brand | Max Water |
| Customer Reviews | 4.4 4.4 out of 5 stars (15) |
| Date First Available | May 25, 2022 |
| External Testing Certification | UL |
| Item Weight | 19.11 pounds |
| Item model number | 4040 |
| Manufacturer | Max Water |
| Material | Polypropylene (PP) |
| Number of Items | 2 |
| Product Benefits | Provides high-quality, pure water for industrial, agricultural, and whole-house use with a long-lasting durable design, suitable various filtration needs. |
| Product Dimensions | 4"D x 8"W x 40"H |
| Set Name | Pack of 2 |
| UPC | 680392206749 680392206909 |
| Unit Count | 1.0 Count |
J**E
Membrane
Good
I**N
Gave these a try and we are running 3ppm now, a really good option.
Trustpilot
4 days ago
1 month ago