The Spectronics XX-40 benchtop ultraviolet (UV) lamp has two 40W, 365nm integrally-filtered UV tubes and operates on 120V. It measures 4 x 48 x 6 inches/10.2 x 121.9 x 15.1cm (H x W x D, where H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back).