4.5" OD 4-Layer Spun Polypropylene Sediment Filters | 10" & 20" Lengths | 1–25 Micron | Depth Filtration for Whole House, RO & Commercial Systems

4.5" OD 4-Layer Spun Polypropylene Sediment Filters – High-Performance Depth Filtration for Clean Water

Upgrade your water filtration system with these 4.5" OD 4-Layer Spun Polypropylene Sediment Filters, engineered for outstanding sediment removal and long-lasting performance. Ideal for whole house, commercial, and pre-RO applications, these filters are available in 10" and 20" lengths and micron ratings of 1, 5, 10, or 25. Each cartridge uses a multi-layer depth filtration design that traps contaminants throughout the entire filter media—not just on the surface—delivering higher dirt-holding capacity, consistent flow, and longer service life. Made from high-purity virgin polypropylene, the filters resist bacterial growth and chemical degradation, making them a dependable choice for clean, safe water.

Key Features: Advanced 4-Layer Design for Cleaner Water & Longer Life

• 4-Layer Depth Filtration
  Graduated-density layers capture larger particles on the outside and finer debris on the inside, optimizing performance and reducing pressure drop.

• Extended Cartridge Life
  Full-depth filtration traps more sediment and extends service intervals without the sudden clogging seen in surface-only filters.

• Bacteria-Resistant Polypropylene
  Constructed from #1 Grade virgin polypropylene for safe, non-toxic filtration with resistance to microbial growth.

• Universal Fit (DOE Style)
  Double open-ended design fits most standard 4.5" diameter housings, including systems from Waterite, Harmsco, GE Osmonics, Pentek, Flomatic, Clack, and Watts.

• Versatile Applications
  Perfect for Point of Entry (POE) residential systems, commercial filtration, food and beverage processing, and as a pre-filter before Reverse Osmosis systems.

• Easy to Install and Replace
  Tool-free, user-friendly installation makes filter changes quick and simple for operators or homeowners.

Specifications: Reliable Filtration at High Flow Rates

• Micron Ratings: 1, 5, 10, 25

• Lengths Available: 9-3/4" or 20"

• Outer Diameter: 4-1/2"

• Flow Rate: Up to 10.6 GPM

• Temperature Range: Up to 140°F (60°C)

• End Type: Double Open End (DOE)

Explore More Filtration Options

• Looking for a cartridge with even more depth-loading capacity? Explore the String Wound Sediment Filter variation—designed to filter throughout the entire cartridge body to reduce pressure drops and increase dirt-holding capacity.

• Need more size or micron options? Visit our Big Blue Water Filters page to browse a wide selection of filter cartridges compatible with 4.5" diameter housings.

• For full system components and accessories, check out our Commercial Water Filters and UV Parts page for housings, UV systems, and more.

Reliable Filtration You Can Trust

Choose these 4.5" OD 4-Layer Spun Polypropylene Sediment Filters for superior contaminant removal, longer filter life, and broad system compatibility. Whether you're protecting a whole-house system or preparing water for commercial or industrial use, these depth filters deliver consistent performance you can rely on. Maintain cleaner water, protect downstream equipment, and reduce maintenance with a filter built to handle the demands of high-capacity filtration—upgrade your system with confidence today.