A frame kit comprises a plurality of improved corner connectors and a plurality of rail members both having a plurality of holes, a plurality of fasteners for coupling each one of the corner connectors to one end of three rail members of the plurality of rail members and at least one set of instructions located in at least one container suitable for constructing at least one frame assembly. The frame kit may also comprise at least one of a plurality of leveling feet, a plurality of casters adapted for coupling to a portion of at least one of the corner connectors, a plurality of rib members for strengthening at least one frame assembly and a plurality of accessory members adapted to couple to at least one of the plurality of rail members. A method for assembling the frame kit and constructing at least one frame assembly is also disclosed.