3M OHP1808 Overhead Projector. Projector brightness: 2100 ANSI lumens. Focal length range (f-f): 355 mm. Signal-to-Noise Ratio (SNR): 38 dB. Lamp type: EHJ (24V), Lamp power: 250 W. Weight: 11300 g, Width: 413 mm, Depth: 464 mm