Abstract: An improved cabinet assembly includes a plurality of wall panels and at least two generally rectangular horizontal support members to define a parallelepiped configuration. The cabinet comprises a plurality of elongate corner posts, at least one for each corner of the parallelepiped configuration. The corner posts selectively support the wall panels in the parallelepiped configuration. Each corner post has a rectangular through bore extending a length of the corner post. Each of the at least two horizontal support members include rectangular through bores aligned with the corner post through bores at each corner of the parallelepiped configuration. A plurality of rectangular splines are provided, one for each corner of the parallelepiped configuration. Each of the splines is received in the aligned rectangular through bores at one of the corners of the parallelepiped configuration to maintain the cabinet assembly in assembled relationship.