37 sq ft Rainbow (in-line) - Filter Cartridge Replacement for Pentair with Unicel - C-4637
Swimming Pool Filter Cartridge Replacement for Pentair 37 sq ft Rainbow (in-line) - .
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.
|Filter Model||37 sq ft Rainbow (in-line)|
|Inside Diameter Top||2-1/8" / open|
|Inside Diameter Bottom||2-1/8" / open|
|Notes||37 sq.ft. C-4637 is an upgrade to 25 sq.ft. C-4326 and C-4625 cartridges.|
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Last updated 10/2/2017 1:23:40 AM, by BYCAPP