precisely located in and with respect to apertures 50 and 90 still referring to fig3 support bracket 116 includes a flat plate 118 having a u shaped channel 120 or lever extending from a midportion of the right side the plate 118 has a vertically elongated slot 122 sized to receive visual display 42 further plate 118 has a second slot 124 for passing conductor ribbon 125 from electronic control panel 12 to control board 36 as will be described hereinafter resilient gaskets 126 and 128 each have adhesive on one side and are affixed to opposite sides of plate 118 gaskets 126 and 128 each have cut out portions 130 and 132 conforming to slots 122 and 124 in assembly the edge with u shaped channel 120 or lever is inserted into apertures 90 and 50 and moved rightwardly such that u shaped channel 120 is positioned behind the right edge 74 of aperture 50 then the left edge 134 of plate 118 is moved rearwardly notches 144 are provided to receive the heads of screws 84 so that plate 118 can be positioned flushly against trim retainer 78 as the left edge 134 of plate 118 is moved forwardly u shaped channel 120 or lever moves forwardly until it seats against the right backside portion of panel 44 peripheral to aperture 50 the presence of lever 120 behind panel 44 prevents oil canning of panel 44 adjacent to aperture 50 in such position screws 138 are driven into respective holes 136 and 139 and are anchored in screw holes 140 of panel 44 screws 138 are tightened so that trim retainer 78 and gasket 126 are tightly sandwiched between support.