The wide metal shade of the Emmett LED Desk Lamp has an acrylic shield that protects the 3 LED patchboards. The shade is 1-inch height with a 1.5 inch width and a 3 inch depth. It adjusts from 13 inch to 19 inch height and 9 inch to 19 inch depth atop a 5.5 inch square base. An updated version of the classic banker's lamp. The benefits of full-spectrum lighting are cleaner, glare-free light, brighter lumen output and no hazardous material,(i.e., mercury). The Emmett LED Desk Lamp features a full-range rotary dimmer switch on the base. CRI: 90; Color Temp: 4000K; 550 Lumens.