Models available include longwave UV/white light, midrange UV/white light or combination longwave/ midrange/white light. Easily switch among the light sources with the rocker switch on the front of the unit. Each UV and white light surface measures 20 x 20cm. Clear UV blocking cover included with each transilluminator. Dimensions: 13.25"D x 19.13"W x 5"H (279 x 356 x 143mm) Height includes UV blocking cover.