They don't give the dimensions of the light table part, but it doesn't look too big. When I built my darkroom, I built in a light box on the far end of the enlarger counter, the 1/4 inch plate glass is level with the rest of the counter. I installed little ping pong size bulbs, red and white, operated with two different dimmer slider switches. About 2 inches below the plate glass is a piece of milky plexiglass, which does a nice job of diffusing. The whole thing is maybe 6 inches deep and 20 inches by the width of the counter - big enough to compare two printfile sheets of negatives. I like the red lights, too, if in the dark. I don't trust them with paper, but I probably could, because of the dimmer. It was more work than some would do, but then, I like projects.