The Optoma BL-FU310B is made from ORIGINAL parts and is intended as a replacement for use in Optoma brand projectors and is a replacement lamp for the alternative projector models DH1017, EH500, OPX5035, X600. It has an average operating time of 2500 hours and includes a 310 Watt UHP lamp made by PHILIPS, USHIO or OSRAM.