The top panel is a recessed,
flat metal plate that slides into the extruded base. It is available in
two thicknesses and a variety of finishes. Holes, inserts or silk-screening
are easily added, making it well suited to customization. Overlays are
particularly suitable since all edges are protected.
The thinner panel (0.050 in/1.27 mm) is appropriate for
applications using overlays and for standard parts that are either vinyl-clad or
powdercoat painted. The recommended thickness for overlays is 0.010 in (0.25 mm).
The thicker panel (0.060 in/1.52 mm) is appropriate when the desired finish
is either clear or black anodize.
While the intended design for the top panel is to be the "top" of the
instrument, it should be noted that there are legitimate applications
where inverting the design may be beneficial.
Non-skid feet, which prevent the unit from sliding on flat surfaces,
are optional on E Style enclosures. When this option is selected, the
feet are applied to the extruded base prior to shipping. A recessed
area on the bottom surface is suitable for labels.