A freezer drawer support assembly is provided for a refrigerator including an upper fresh food compartment and a lower freezer compartment having a rearwardly tapering liner. The support assembly includes a pair of side adapters which compensate for the tapering of the liner, while defining both channels for the attachment of extensible drawer slides, to which a freezer door and a slidable basket is attached, and ledges for slidably supporting another basket. Preferably, the side adapters mate with groove and ledge structure formed into the liner to enhance the transfer of weight from the baskets, while enabling a refrigerator liner designed to directly support one or more slidable baskets to indirectly support multiple baskets which can be slid relative to each other.