When it's a question of higher illumination, longer lamp life and a cost that fits your budget, the 3M Overhead Projector 1700 Series Models are the answer. As functional as it is affordable, the 3M Model 1720 features a closed singlet projection head for extra lens and mirror protection. The 3M Model 1720 keeps the focus on your message with 2,500 lumens of brightness!
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Electronics : 3M Overhead Projector Closed Head 2500 Lumens Enxlamp 3yr Warraty