
Harmsco (801-0.35-20) 20"x2.5" 801 Series Sediment Pleated 0.35 Micron Filter
Harmsco 801-0.35-20 Pleated Sediment Filter
The Harmsco 801-0.35-20 delivers sub-micron sediment removal with a pleated polyester design engineered for maximum surface area and flow efficiency. Built for 20" x 2.5" standard housings, this 0.35 micron filter combines FDA-approved materials with thermally bonded construction for long service life and the lowest cost per gallon filtered.
Engineered for Performance and Longevity
Pleated Polyester Media
Up to 50% more surface area than competitive filters for superior contaminant capture and longer filtration runs between change-outs
Low Pressure Drop Design
Optimized pleat geometry maintains high flow rates while minimizing pressure loss across the filter for efficient whole-house performance
0.35 Micron Rating
Sub-micron filtration removes fine sediment, silt, sand, and particulates for exceptional water clarity and protection of downstream equipment
Reusable & Cleanable
Durable construction allows for cleaning and reuse, reducing replacement frequency and lowering your total cost of ownership
Thermally Bonded Construction
No adhesives or binders—thermal bonding creates a stronger seal and longer usable life without risk of media migration
NSF 61 Certified Materials
FDA-approved polyester media meets NSF/ANSI Standard 61 for drinking water system components, ensuring safe contact with potable water
Standard 20" x 2.5" Housing Fit
The Harmsco 801-0.35-20 fits all standard 20-inch sediment filter housings with 2.5-inch outer diameter capacity. Ideal for whole-house water filtration systems, well water treatment, and pre-filtration for RO systems, water softeners, UV sterilizers, and other sensitive equipment requiring fine sediment removal. Color-coded end caps ensure easy identification during maintenance. Compatible with Harmsco HIF, Pentek, Culligan, and other major brand 20" x 2.5" housings.
Harmsco has been engineering high-performance filtration solutions for over 40 years. Each 801 Series cartridge is manufactured to exacting standards for reliable, cost-effective sediment control.
Harmsco 801-0.35-20 Pleated Sediment Filter
The Harmsco 801-0.35-20 delivers sub-micron sediment removal with a pleated polyester design engineered for maximum surface area and flow efficiency. Built for 20" x 2.5" standard housings, this 0.35 micron filter combines FDA-approved materials with thermally bonded construction for long service life and the lowest cost per gallon filtered.
Engineered for Performance and Longevity
Pleated Polyester Media
Up to 50% more surface area than competitive filters for superior contaminant capture and longer filtration runs between change-outs
Low Pressure Drop Design
Optimized pleat geometry maintains high flow rates while minimizing pressure loss across the filter for efficient whole-house performance
0.35 Micron Rating
Sub-micron filtration removes fine sediment, silt, sand, and particulates for exceptional water clarity and protection of downstream equipment
Reusable & Cleanable
Durable construction allows for cleaning and reuse, reducing replacement frequency and lowering your total cost of ownership
Thermally Bonded Construction
No adhesives or binders—thermal bonding creates a stronger seal and longer usable life without risk of media migration
NSF 61 Certified Materials
FDA-approved polyester media meets NSF/ANSI Standard 61 for drinking water system components, ensuring safe contact with potable water
Standard 20" x 2.5" Housing Fit
The Harmsco 801-0.35-20 fits all standard 20-inch sediment filter housings with 2.5-inch outer diameter capacity. Ideal for whole-house water filtration systems, well water treatment, and pre-filtration for RO systems, water softeners, UV sterilizers, and other sensitive equipment requiring fine sediment removal. Color-coded end caps ensure easy identification during maintenance. Compatible with Harmsco HIF, Pentek, Culligan, and other major brand 20" x 2.5" housings.
Harmsco has been engineering high-performance filtration solutions for over 40 years. Each 801 Series cartridge is manufactured to exacting standards for reliable, cost-effective sediment control.
Description
Harmsco 801-0.35-20 Pleated Sediment Filter
The Harmsco 801-0.35-20 delivers sub-micron sediment removal with a pleated polyester design engineered for maximum surface area and flow efficiency. Built for 20" x 2.5" standard housings, this 0.35 micron filter combines FDA-approved materials with thermally bonded construction for long service life and the lowest cost per gallon filtered.
Engineered for Performance and Longevity
Pleated Polyester Media
Up to 50% more surface area than competitive filters for superior contaminant capture and longer filtration runs between change-outs
Low Pressure Drop Design
Optimized pleat geometry maintains high flow rates while minimizing pressure loss across the filter for efficient whole-house performance
0.35 Micron Rating
Sub-micron filtration removes fine sediment, silt, sand, and particulates for exceptional water clarity and protection of downstream equipment
Reusable & Cleanable
Durable construction allows for cleaning and reuse, reducing replacement frequency and lowering your total cost of ownership
Thermally Bonded Construction
No adhesives or binders—thermal bonding creates a stronger seal and longer usable life without risk of media migration
NSF 61 Certified Materials
FDA-approved polyester media meets NSF/ANSI Standard 61 for drinking water system components, ensuring safe contact with potable water
Standard 20" x 2.5" Housing Fit
The Harmsco 801-0.35-20 fits all standard 20-inch sediment filter housings with 2.5-inch outer diameter capacity. Ideal for whole-house water filtration systems, well water treatment, and pre-filtration for RO systems, water softeners, UV sterilizers, and other sensitive equipment requiring fine sediment removal. Color-coded end caps ensure easy identification during maintenance. Compatible with Harmsco HIF, Pentek, Culligan, and other major brand 20" x 2.5" housings.
Harmsco has been engineering high-performance filtration solutions for over 40 years. Each 801 Series cartridge is manufactured to exacting standards for reliable, cost-effective sediment control.













