

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The PARKER S39R20A is a string-wound cartridge filter designed for liquid filtration in plumbing and water treatment applications. Built from FDA-grade polyester with a polypropylene plastic core, this filter measures 2.5 inches in outside diameter and 20 inches in length, offering a 1 micron filtration rating for fine particulate removal. It is rated for continuous service at water temperatures up to 120 degrees F. Licensed plumbers and water treatment technicians install this filter in standard filter housings as part of point-of-entry or point-of-use filtration systems.
The S39R20A is suited for residential and light commercial water filtration setups where sediment control at 1 micron is required. It fits into common 20-inch big-blue or standard filter housings used in whole-house pre-filtration, process water lines, and general plumbing supply protection. Its string-wound construction provides graduated density filtration, trapping larger particles at the outer layers and finer sediment toward the core.
Designed as an OEM-style replacement or standard service cartridge for 20-inch plumbing filter housings accepting 2.5-inch outside diameter string-wound cartridges.
Installation is typically performed by a licensed plumber or qualified water treatment technician. Shut off the water supply and relieve system pressure before opening the filter housing. Use a housing wrench to remove the sump and avoid over-tightening when reinstalling to prevent housing damage. Follow local plumbing code requirements, including IPC guidelines, for potable water filtration installations.
Thanks for subscribing!
This email has been registered!