sta rite cartridge

Several listings specify 4‑inch top and bottom holes for multiple cartridge lengths. At least one listing provides an open/castle top‑and‑bottom dimension (example: Open 6.25" x 3.75").

Listings show multiple pack quantities and set styles: single cartridges, 2‑packs, 4‑packs, 16‑packs, and set‑style orders that include both an inner and an outer cartridge (inner [1] & outer [1]).

Descriptions emphasize easy cleaning. One supplier recommends rinsing cartridges every 4–6 weeks and replacing them at the start of each swim season or when pump pressure increases about 8–10 PSI above normal. Other listings note the cartridges are designed for easy maintenance but don’t provide a specific schedule.

Descriptions list removal of biomass, dirt and general debris (hair, leaves, critters), visible particles such as sediment, sand, silt and rust, and reduced turbidity; continued use is also said to help reduce chlorine taste and odor.

Listings call out pleated polyester/pleat materials, end caps, and flow‑focused cores described as max‑flow or high‑flow. Several descriptions note uniform pleat designs to increase filtration surface area and circulation.

Some listings include an air bleed tube; several are sold as inner+outer replacement pairs (an inner and an outer cartridge). Other listings list only the cartridge with no extra accessories noted.