Use FPPWFU01 / PWF-1 or a compatible cartridge that explicitly names this filter family and refrigerator model.
Manufacturer mapping
Frigidaire’s FRSS2623AS product page lists FPPWFU01 PurePour PWF-1 among the refrigerator accessories.
OEM vs aftermarket
OEM provides the baseline for fit. Aftermarket replacements compete mainly on cost and certification.
Why the exact code matters
Frigidaire uses PWF-1 and PWF-2 families, so matching the part number avoids ordering the wrong cartridge.
Cost per year
Two recurring purchases per year can make compatible-filter savings meaningful.
How to verify fit before buying Frigidaire FRSS2623AS Water Filter: FPPWFU01 / PWF-1 Guide
Treat compatibility as a model-number decision, not a shape-matching exercise. Start with the appliance or system model label, then confirm the exact cartridge or replacement code listed by the manufacturer. Similar-looking filters can use different tabs, seals, RFID features or bypass interfaces, so a cartridge that appears to fit can still leak, restrict flow or fail to lock correctly.
For aftermarket replacements, separate physical compatibility from filtration performance. A seller can correctly state that a cartridge fits a refrigerator while the contaminant-reduction scope differs from the original filter. If lead, cysts, PFAS or another health-related claim matters, verify the exact replacement model in the current certification or performance documentation rather than assuming an OEM-equivalent claim set.
Compare recurring cost, availability and replacement risk
Replacement products should be evaluated over several service cycles. Multiply the current cartridge price by the realistic replacement frequency, add shipping, and check whether the same model is consistently stocked. A low first-purchase price is less useful if the cartridge becomes difficult to source or if replacement intervals are short.
Watch for vague phrases such as “uses certified media” or “tested to a standard.” Finished-product certification is stronger evidence than a statement about one component. For marketplace listings, clear manufacturer identity, exact model numbers, return policies and traceable certification reduce the risk of counterfeit-style or poorly fitting replacements.