Overhead projector is engineered for durability with hardened, break-resistant stage glass. Durable stage glass can reduce maintenance, interruptions and repair expenses. An open singlet projection head makes it easy to clean. 2,500 lumens of light can enhance your visuals. Hardened stage glass is held by clips for easy replacement. In-circuit resistor extends lamp life. 10" x 10" staging area offers plenty of room for big ideas. Overhead projector offers 10' power cord, tangle-free cord storage, easy-to-locate on/off button and focus knob design. Thermal protection circuit cuts power to the lamp if the projector exceeds safe operating temperature. Weighs 17.8 lb. Voltage rating: 120VAC, 60Hz.