frame member 19 the front frame member 17 has an inner peripheral portion 37 which circumscribes the transparent pane 27 once the pane is installed in the assembly the innermost region of the peripheral portion 37 comprises a flange region which overlays an outer periphery of the transparent pane 27 an internal wall 39 extends perpendicularly from the innermost region of the portion 37 generally perpendicular thereto and creates a right angled cavity in the interior of the frame assembly the internal wall 39 also forms one side of an internal baffle or cavity 41 more importantly the right angled cavity which is formed by the internal wall 39 and outer peripheral wall 37 form a positive stop region for the outer periphery of the transparent pane 27 holding it securely in position with reference now to the rear frame member 19 of the window frame assembly shown in fig4 this member of the assembly also has an inner peripheral portion which depends downwardly form the region shown as 19 in fig4 surrounding the door panel this inner peripheral region forms a plurality of honeycomb regions shown as 42 43 and 45 in fig4 when viewed in cross section the lowermost honeycomb region as viewed in fig4 has an outer circumferential rib 49 which is received within a mating recess or.