A pair of connectable box carcass framework members for the fabrication of non-panel constructed furniture carcasses. They simplify the construction of a furniture carcass with a minimal of tools and skill required to produce a dimensionally square, precisely sized, box that accepts an abundance of aesthetic and functional options. They are based on a pair of mechanical fastener connectable vertical and horizontal members that have connectable zipper channels, linear rabbets for the retention of side panels, screw busses, and open channels with series of spaced orifices therein for the passage of mechanical connectors.