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The CULLIGAN INC S1A-D is a whole house sediment water filter replacement cartridge sold in a 2-pack. Constructed from pleated paper media, it captures scale, rust particles, sand, dirt, and silt at a 20 micron rating. Each cartridge delivers up to 4 months or 16,000 gallons of service life before replacement is needed. This cartridge is designed for residential whole house filtration systems and is installed by licensed plumbers or experienced water treatment technicians. The pleated design increases surface area compared to wound or spun cartridges, allowing for longer service intervals between changeouts.
This cartridge is suited for residential whole house applications where sediment control is the primary treatment goal. It protects downstream fixtures, valves, and appliances from particulate buildup. Typical installation scenarios include point-of-entry housing systems mounted near the main water shutoff. The 2-pack format supports a standard annual maintenance cycle, providing two full changeout intervals per purchase. Compatible valve trim sets include TVs 216-912, 529-096, and 583-328 as noted by the manufacturer.
Compatible with valve trim sets 216-912, 529-096, and 583-328 as specified by the manufacturer. Intended as an OEM-style replacement cartridge for Culligan whole house sediment filter housings.
Installation should be performed by a licensed plumber or qualified water treatment technician. Shut off the main water supply and depressurize the filter housing before removing the spent cartridge. Follow all applicable IPC requirements for potable water system service. Do not overtighten the filter housing sump — hand-tight plus a quarter turn with a housing wrench is the general guidance for standard filter housings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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