Watts-SF-20 Watts String Wound Cartridge Standard 20" in
Watts-SF-20 Core Specs
Construction & Performance
| Manufacturer | Watts |
| Model Number | Watts-SF-20 |
| Filter Type | String wound sediment cartridge |
| Core Material | 100% polypropylene string, no binders or adhesives |
| Chemical Resistance | Excellent — polypropylene resists degradation from chlorine and pH extremes |
| Media Migration | None — tightly wound construction prevents fiber shedding |
| Packaging | Individually sealed in poly bags for cleanliness |
Where This Filter Works
The Watts-SF-20 is designed for standard 20-inch filter housings in both whole-house sediment filtration systems and under-counter applications including reverse osmosis pre-filtration. Use it as a replacement cartridge in any Watts or compatible brand housing rated for 20" x 2.5" cartridges. This filter is ideal for municipal water with sand, silt, rust, or scale, and serves as effective pre-filtration upstream of carbon blocks, membranes, or UV systems. Food grade materials meet FDA requirements for drinking water, beverage processing, and food service applications.
Watts-SF-20 Core Specs
Construction & Performance
| Manufacturer | Watts |
| Model Number | Watts-SF-20 |
| Filter Type | String wound sediment cartridge |
| Core Material | 100% polypropylene string, no binders or adhesives |
| Chemical Resistance | Excellent — polypropylene resists degradation from chlorine and pH extremes |
| Media Migration | None — tightly wound construction prevents fiber shedding |
| Packaging | Individually sealed in poly bags for cleanliness |
Where This Filter Works
The Watts-SF-20 is designed for standard 20-inch filter housings in both whole-house sediment filtration systems and under-counter applications including reverse osmosis pre-filtration. Use it as a replacement cartridge in any Watts or compatible brand housing rated for 20" x 2.5" cartridges. This filter is ideal for municipal water with sand, silt, rust, or scale, and serves as effective pre-filtration upstream of carbon blocks, membranes, or UV systems. Food grade materials meet FDA requirements for drinking water, beverage processing, and food service applications.
Original: $16.24
-65%$16.24
$5.68Description
Watts-SF-20 Core Specs
Construction & Performance
| Manufacturer | Watts |
| Model Number | Watts-SF-20 |
| Filter Type | String wound sediment cartridge |
| Core Material | 100% polypropylene string, no binders or adhesives |
| Chemical Resistance | Excellent — polypropylene resists degradation from chlorine and pH extremes |
| Media Migration | None — tightly wound construction prevents fiber shedding |
| Packaging | Individually sealed in poly bags for cleanliness |
Where This Filter Works
The Watts-SF-20 is designed for standard 20-inch filter housings in both whole-house sediment filtration systems and under-counter applications including reverse osmosis pre-filtration. Use it as a replacement cartridge in any Watts or compatible brand housing rated for 20" x 2.5" cartridges. This filter is ideal for municipal water with sand, silt, rust, or scale, and serves as effective pre-filtration upstream of carbon blocks, membranes, or UV systems. Food grade materials meet FDA requirements for drinking water, beverage processing, and food service applications.
