Quick take
The correct OEM family is HAF-QIN / DA97-17376B. Confirm the full refrigerator suffix before checkout.
Manufacturer-verified mapping
Samsung’s HAF-QIN compatibility list includes RF28T5021**.
OEM vs compatible
OEM minimizes fit ambiguity. Compatible cartridges can cost less if they document both HAF-QIN fit and their exact certification.
Why model pages matter
Owners often search the refrigerator model rather than the filter part number, making this a very close-to-purchase query.