These basic black and white light boxes made for viewing blueprints and transparencies. The 24x36, UL approved light boxes also feature a sturdy Plexiglas top and baked enamel sides which are resistant to dents and breaks. They also feature rapid start lamps to finish projects in a timely manner. These boxes are very affordable yet practical, providing an illuminated surface for photography, art or architecture. The full length angle mounts will hold either paper, fabric or glass to perform a variety of tasks. Best of all the folding handles can also be used as tilt stands to provide a tilted surface for drawing or going documents.