When used with unique sets of materials, APH's Light Box and Mini-Lite Box helps to develop awareness of light, color, and objects. APH's light boxes are unique devices that help students utilize their residual vision. When used with special sets of materials designed by APH, light boxes assist in the instruction of tracking, scanning, eye-hand coordination, visual discrimination, and visual perceptual skills. 25 x 15 x 5 inches. Includes cover.