20 sq ft Commander II (in line) - 570102 Filter Cartridge Replacement for Pentair with Unicel - C-4320
Swimming Pool Filter Cartridge Replacement for Pentair 20 sq ft Commander II (in line) - 570102.
Pool filter cartridges are used to filter swimming pool water by collecting dirt, debris, algae, oils and other contaminants and filtering them out of the pool water. Cartridge filters have a much larger filtering area due to their design and construction. The pleats on a cartridge allow the filter to run at a lower pressure. As a result, the back pressure on your pool and spa pump is reduced thereby increasing the lifespan of your equipment. A pleated cartridge can trap debris as small as 10 to 15 microns (not visible to the un-aided human eye).
Cartridge filtration has been increasingly popular due to lower maintenance in comparison to old style Sand and most D.E. pool filters. There is no need to "Backwash" a cartridge filter, losing water and chemicals. There is no diatomaceous earth (D.E. - white powder substance) to deal with and the cleaning of the filter cartridge is much simpler.
Please utilize the table below to cross reference numbers and measurements as well.
| Description | Value |
|---|---|
| Unicel # | C-4320 |
| Filber # | FC-1215 |
| Pleatco # | PA20 |
| Filter Mfg | Pentair |
| Filter Model | 20 sq ft Commander II (in line) |
| OEM # | 570102 |
| Length | 11-7/8" |
| Outside Diameter | 4-5/8" |
| Inside Diameter Top | 2-1/16" / open |
| Inside Diameter Bottom | 2-1/16" / open |
| Pleat Count | 111 |
| Square Feet | 20 |
| Notes | American original is 4-11/16" overall length The C-4620 has been discontinued by Unicel. Use C-4320. |
| Price | $22.01 |
How to Identify Your Pool or Spa's Filter Cartridge
How to Clean a Filter Cartridge
Types of Pool Filters
Last updated 1/3/2024 11:07:43 AM, by BYCAPP