A shelf assembly includes a shelf frame adapted to support a planar shelf panel. The shelf frame comprises a front member, opposed side members, and a rear member. A support channel is integrally formed into an underside of the shelf frame. A reinforcing support frame is captured within the support channel to form a unitary shelf assembly and is adapted to support the shelf frame within said appliance. At least one stud projects outward from the reinforcing support frame with respect to the opposed side members of the shelf frame. The studs are adapted to be received within a corresponding recess of an interior wall of said appliance to thereby support the shelf assembly within said appliance.