I don't know much about projectors. I was looking for something else and found this. Looked like major price drop. There are few more projectors with similar discounts.
* Delivering power and performance at unbeatable value
* 4000 Lumens of brightness; 310mm Triplet lens
* Whisper quiet fan
* Fold-down arm for ultimate ease of use
2 halogen lamps and quick lamp changer
Colour tuning to avoid blue and brown light borders
The 3M Vision 1750 Overhead Projector - High performance and economy combined
The perfect presenting solution for education and business applications - the 3M 1750 is economical and dependable. With extra light output and a triplet lens, it supplies crisp, bright and powerful images even in lit rooms. The folding arm ensures easy transportation and storage.
Dimensions: (WxD) 351 x 419mm