A system for displaying electronic construction documents includes an enclosure having doors extending across an open side to define an interior volume that is sealable against infusion of dust and water, and a monitor panel extending across the width of the interior volume to define a back chamber between the monitor panel and a back panel of the enclosure. The system includes a purge air system in fluid communication with the back chamber and that is operable, when door are open, to draw in and filter air from outside the enclosure and establish a positive air pressure within the back chamber. The monitor panel includes a perimeter frame with a center aperture and a transparent pane extending across the center aperture for viewing an electronic display therethrough, and is angularly adjustable between a plurality of angled upright positions while maintaining the positive pressure within the back chamber.