Abstract: Modular wall panels and ancillary furnishings and fixtures, such as shelves and cabinets, having a single load-bearing connector post between two coplanar panel members. The panel members engage apertures in the side walls of the connector post. The front and back walls of the connector post are vertically slotted with a width dimension to support hooks from two brackets within each slot, one from the left and one from the right sides of adjacent shelves, desk surfaces or cabinets. Thus, the connector posts directly support all of the system load without lateral force transfer from intermediate load bearing members. The load is transmitted vertically downward to a support surface, usually a floor. At intersections of non coplanar panels, a connector post terminates each planar panel run and is joined to a non load-bearing intersection post at a side wall of each connector post.