Abstract: A projection kiosk for a multi-projector digital signage system includes an enclosure and a frame disposed therein. The frame includes attachment points which can hold in position a plurality of projectors. The projectors may be aligned with sub-pixel-resolution accuracy to enable projection of pixel-aligned images onto a screen. The enclosure includes a heat ducting subsystem configured to direct air into the enclosure, duct air through the projectors, and discharge air away from a projection path between the plurality of projectors and the screen.