This is for an OPTOMA Digital Video projector. It is part number P/N:5811116037-SOT. Marked on bulb: Osram P-VIP 180/ 0.8 E20.8 Type E20.8 180 W It will fit Optoma Projectors models: DS 317, ES 531, ES 532, EX 522, EX 532 and possibly others. It is slightly used. ***I just checked with MY PROJECTOR LAMPS, the largest seller of projector bulbs in Canada and was told this bulb is $269.09 plus tax plus shipping bringing it to well over $300 . Save over $200 Priced at only $90 If wanted, I will throw in for FREE the projector which needs repair. It powers up. I will ship anywhere for my costs. Bulb located in Victoria BC. ****I update my ads IMMEDIATELY so if it is not marked as sold then it IS available so PHONE 250-656-0549 No Saturday or Friday evening calls. See other ads by rapsent