
Watts-(SF5-20) Watts String Wound Cartridge Standard 20 in
Watts SF5-20 Core Specifications
Construction & Performance Data
| Model Number | Watts SF5-20 |
| Filtration Type | String wound sediment cartridge |
| Media Composition | 100% polypropylene string, food grade |
| Chemical Resistance | Excellent – no leachables or contaminant migration |
| Operating Temperature | Up to 140°F (60°C) |
| Maximum Pressure | 40 PSI |
| Packaging | Individually sealed in poly bag for cleanliness |
Where the Watts SF5-20 Fits
This 20-inch cartridge is designed as a replacement filter for standard whole house or under-counter sediment filter housings that accept 20" x 2.5" cartridges. The 5-micron rating makes it effective for general sediment reduction including sand, silt, rust, and particulate matter in municipal or well water systems. Its polypropylene construction resists a wide range of chemicals and eliminates the risk of fiber shedding or media migration that can occur with cheaper cellulose or cotton-based filters. Use it as a pre-filter stage ahead of carbon blocks, reverse osmosis membranes, or UV systems to extend their service life. Meets FDA standards for direct contact with potable water and food-grade beverages.
Watts SF5-20 Core Specifications
Construction & Performance Data
| Model Number | Watts SF5-20 |
| Filtration Type | String wound sediment cartridge |
| Media Composition | 100% polypropylene string, food grade |
| Chemical Resistance | Excellent – no leachables or contaminant migration |
| Operating Temperature | Up to 140°F (60°C) |
| Maximum Pressure | 40 PSI |
| Packaging | Individually sealed in poly bag for cleanliness |
Where the Watts SF5-20 Fits
This 20-inch cartridge is designed as a replacement filter for standard whole house or under-counter sediment filter housings that accept 20" x 2.5" cartridges. The 5-micron rating makes it effective for general sediment reduction including sand, silt, rust, and particulate matter in municipal or well water systems. Its polypropylene construction resists a wide range of chemicals and eliminates the risk of fiber shedding or media migration that can occur with cheaper cellulose or cotton-based filters. Use it as a pre-filter stage ahead of carbon blocks, reverse osmosis membranes, or UV systems to extend their service life. Meets FDA standards for direct contact with potable water and food-grade beverages.
Original: $16.47
-65%$16.47
$5.76Description
Watts SF5-20 Core Specifications
Construction & Performance Data
| Model Number | Watts SF5-20 |
| Filtration Type | String wound sediment cartridge |
| Media Composition | 100% polypropylene string, food grade |
| Chemical Resistance | Excellent – no leachables or contaminant migration |
| Operating Temperature | Up to 140°F (60°C) |
| Maximum Pressure | 40 PSI |
| Packaging | Individually sealed in poly bag for cleanliness |
Where the Watts SF5-20 Fits
This 20-inch cartridge is designed as a replacement filter for standard whole house or under-counter sediment filter housings that accept 20" x 2.5" cartridges. The 5-micron rating makes it effective for general sediment reduction including sand, silt, rust, and particulate matter in municipal or well water systems. Its polypropylene construction resists a wide range of chemicals and eliminates the risk of fiber shedding or media migration that can occur with cheaper cellulose or cotton-based filters. Use it as a pre-filter stage ahead of carbon blocks, reverse osmosis membranes, or UV systems to extend their service life. Meets FDA standards for direct contact with potable water and food-grade beverages.














