5 Micron 10x4.5in String Wound Whole House Sediment Filter - 4 Pack

In this review the Membrane Solutions 5 micron string wound cartridge proves to be a practical choice for homeowners dealing with well water or heavy sediment. It stands out as a durable prefilter that balances dirt holding capacity with reasonable flow rate, making it a smart replacement for whole house sediment stages. The main reason to buy is straightforward: it removes rust, silt, sand and other particulates effectively while lasting far longer than basic spun PP cartridges.

Key Features

• Material: Made from food grade 100% polypropylene, the cartridge is non-toxic, lead and BPA-free for safer filtered water.
• Filtration rating: The 5 micron rating captures fine sediment and rust particles to protect downstream appliances and fixtures.
• Dirt capacity: The string wound design offers a deep graded structure that increases dirt holding so the filter needs changing less often.
• Flow performance: This string wound cartridge is designed to deliver roughly double the flow rate of standard PP sediment filters, reducing pressure drop in many whole house systems.
• Universal fit: The 10 x 4.5in standard size fits most 10in blue housings, making replacements simple and compatible with many systems.
• Long service life: High dirt-loading construction can treat tens of thousands of gallons depending on inlet water quality, extending time between changes.

Who It's For

Homeowners on well water or properties with visible particulate issues will find this cartridge especially useful as a first-stage sediment filter in whole house systems. It is aimed at those who value a longer service interval and want to reduce sediment buildup on faucets, appliances and shower fittings.

Those needing chemical removal, microbial reduction or sub-micron filtration should look elsewhere or use this as a prefilter ahead of specialized stages. Also, if your system requires a non-standard length or diameter, confirm measurements before buying.

Pros & Cons

Pros

• High dirt-holding capacity reduces change frequency for lower maintenance.
• Effective at removing rust, silt and sand, protecting downstream filters and fixtures.
• Food grade polypropylene construction is odorless and free of lead and BPA.
• Standard 10 x 4.5in size fits most housings for easy replacement.

Cons

• Does not address dissolved contaminants or bacteria; intended only for sediment removal.
• Actual service life varies with inlet water quality, so some users may need more frequent changes than advertised.

Specifications

Brand	Membrane Solutions
Filter type	String wound sediment cartridge
Micron rating	5 micron
Size	10 x 4.5 in
Material	100% polypropylene, food grade
Pack quantity	4 pack
Typical life	Up to 30,000-40,000 gallons (depends on water quality)

Our Verdict

The Membrane Solutions 5 micron string wound cartridge is a reliable, cost-effective prefilter for homes with sediment-heavy feed water. Its high dirt-loading and improved flow make it a good value for protecting appliances and reducing visible buildup, though it should be paired with additional stages for chemical or microbial concerns.

Frequently Asked Questions

Will this fit my existing 10in housing?
Yes, the cartridge is the standard 10 x 4.5 in size designed to fit most 10in blue housings.

How often should I replace the filter?
Replace at least every six months or sooner depending on inlet water quality; capacity is advertised up to 30,000-40,000 gallons but will vary.

Does it remove chlorine or bacteria?
No, this is a sediment filter for particulates; use activated carbon or specific microbial media for those contaminants.