the male lock devices 44 mount directly to an anchoring element 48 the slots 62 are formed in the edges of the center core of the planar portion 14 the anchoring element fits into a slot 60 shown most clearly in fig2 and 8 mounting screws 46 extend through the back of the female and male locks 42 and 44 and into receiving portions 52 of the anchoring element 48 shown most clearly in fig9 it can be appreciated that with this arrangement the lock devices 42 and 44 mount directly to the anchoring element 48 and abut the anchoring element thereby eliminating the less dense and poorly supporting material of the lightweight center layer 20 of the prior art the anchoring element 48 provides added support for the lock members 42 and 44 moreover installation is straight forward and requires no special tools or application of adhesive should damage occur repair is simple so that the panel 12 is not ruined if a mounting screw 46 or orifice 52 is stripped a new screw may simply be inserted into the adjacent unused receiving orifice 52 and no replacement parts are needed it can be appreciated that if the anchoring element 48 or other elements do need to replacement they are simply removed with a screwdriver and new lock devices 42 or 44 or anchoring.