pieces have a lip having an underside surface which does not conform to the overall pattern of the molding 21 23 25 and 27 however since the upper surface of the lip is a generally flat pattern dominated by the surface pattern of the junction pieces 63 65 67 and 69 there is sufficient material to enable a clearance to the rear to overlap the molding pattern in fig3 the overall motif is such that the corner patterns project such that it is clear that the frame is not one piece but the overlap appears more deliberate and the corners dominate the pattern the view of fig3 emphasizes that the patterns can be mixed and matched to produce more dramatic effect referring to fig4 side sectional view taken along only the upper portion of section line 4 u2014 4 shows the cross section of the interfit the top straight mounting piece 31 is shown as coming completely through and atop the side straight mounting piece 33 to illustrate one possible manner of fit to the left of mounting pieces 33 and 31 is seen the bracket 51 and its leftwardly extending polymeric projections 53 a pair of threaded members 71 are shown securing the bracket 51 into the mounting pieces 31 and 33 to the left decorative molding 25 is seen as having a slide screw 61 protruding a sufficient amount to enter through the large end of the keyhole plate 39 resting in the countersunk portion 43 such that the head of the slide screw 61 enters the slot depression 37.