a. a combination of aligned and connected forwardly located components and a plurality of rearwardly located LED (light emitting diode) modules easily and readily secured to the combination of aligned and connected forwardly located components;

b. major forwardly located components including, in order from front to back, a front panel, a seal, a polycarbonate panel, spacer brackets, and a rear panel and rearwardly located LED (light emitting diode) modules; and,

c. the rearwardly located LED modules including an insertion panel, the insertion panel having an apertured planar section including a plurality of imperforate offset tabs being located at a lower region of the panel and an opposed tab being located at an upper region of the panel wherein the opposed tab extends upwardly from and along the plane of the apertured planar section, the opposed tab including an opposed latch which readily engages the rear panel of the forwardly located components in three-point attachment, whereby the geometry of the forwardly located components and the rearwardly located components is configured together or separately to offer minimum dimension structure where panels or edges of panels are mated and/or joined with such dimension minimalizing allows uniform spacing of the LED pixels across each of the adjacent LED modules, as well as across adjoining forwardly located components.