A storage system (100, 200, 300, 400, 500, 600, 700) comprising: four support posts; four mounting collars, one mounting collar attachable to each of the support posts, wherein each mounting collar comprises a conical outer surface; a heated shelf connected to and supported by the four support posts, the heated shelf configured to be adjustable along the support posts; wherein the heated shelf comprises a heatable support surface (114, 114') configured to support food items thereon, wherein the heated shelf is generally rectangular and comprises four corners, wherein each corner comprises a bracket (26, 26a) including an aperture extending therethrough and having a conically-shaped inner surface configured to engage the conical outer surface of a respective mounting collar and enable the heated shelf to be attached to a support post; wherein the heated shelf comprises: a body (12, 12') including a plurality of panels (20, 20', 22, 22') fixed to each other and cooperating to define an interior space including an upper panel (20, 20') comprising the heatable support surface and a lower panel (22, 22') attached to the upper panel; a heating assembly (16, 16') disposed within the interior space of the body and configured to transfer heat to the upper panel of the plurality of panels of the body; and a temperature control device associated with one of the panels of the body and electrically and thermally coupled to the heating assembly, the temperature control device at least partially externally located relative to the heated shelf and operable to control a temperature of the heatable support surface of the heated shelf; wherein the heating assembly includes: at least one heating element (28, 28'); a diffuser plate thermally coupled to the at least one heating element and to the upper panel of the plurality of panels, wherein the diffuser plate uniformly distributes heat from the at least one heating element to the upper panel primarily by conductive heat transfer; and an insulation material disposed between the at least one heating element and the lower panel configured to substantially reduce heat transfer from the at least one heating element to the lower panel. four support posts; four mounting collars, one mounting collar attachable to each of the support posts, wherein each mounting collar comprises a conical outer surface; a heated shelf connected to and supported by the four support posts, the heated shelf configured to be adjustable along the support posts; wherein the heated shelf comprises a heatable support surface (114, 114') configured to support food items thereon, wherein the heated shelf is generally rectangular and comprises four corners, wherein each corner comprises a bracket (26, 26a) including an aperture extending therethrough and having a conically-shaped inner surface configured to engage the conical outer surface of a respective mounting collar and enable the heated shelf to be attached to a support post; wherein the heated shelf comprises: a body (12, 12') including a plurality of panels (20, 20', 22, 22') fixed to each other and cooperating to define an interior space including an upper panel (20, 20') comprising the heatable support surface and a lower panel (22, 22') attached to the upper panel; a heating assembly (16, 16') disposed within the interior space of the body and configured to transfer heat to the upper panel of the plurality of panels of the body; and a temperature control device associated with one of the panels of the body and electrically and thermally coupled to the heating assembly, the temperature control device at least partially externally located relative to the heated shelf and operable to control a temperature of the heatable support surface of the heated shelf; a body (12, 12') including a plurality of panels (20, 20', 22, 22') fixed to each other and cooperating to define an interior space including an upper panel (20, 20') comprising the heatable support surface and a lower panel (22, 22') attached to the upper panel; a heating assembly (16, 16') disposed within the interior space of the body and configured to transfer heat to the upper panel of the plurality of panels of the body; and a temperature control device associated with one of the panels of the body and electrically and thermally coupled to the heating assembly, the temperature control device at least partially externally located relative to the heated shelf and operable to control a temperature of the heatable support surface of the heated shelf; wherein the heating assembly includes: at least one heating element (28, 28'); a diffuser plate thermally coupled to the at least one heating element and to the upper panel of the plurality of panels, wherein the diffuser plate uniformly distributes heat from the at least one heating element to the upper panel primarily by conductive heat transfer; and an insulation material disposed between the at least one heating element and the lower panel configured to substantially reduce heat transfer from the at least one heating element to the lower panel. at least one heating element (28, 28'); a diffuser plate thermally coupled to the at least one heating element and to the upper panel of the plurality of panels, wherein the diffuser plate uniformly distributes heat from the at least one heating element to the upper panel primarily by conductive heat transfer; and an insulation material disposed between the at least one heating element and the lower panel configured to substantially reduce heat transfer from the at least one heating element to the lower panel.