The XBO 1600 W CL OFR is a 1600 watt, ozone free quartz Xenon Short Arc Lamp with 60000 lumens visible light output. Typical lifetime is 2400 hours. This lamp has SFa27-10 (anode) and SFaX27-12 (cathode) basing on the 52mm diameter x 370mm long clear double ended bulb. This item is made by Osram, and is commonly available from no other source but Osram/Sylvania, but as alternative part numbers 69530, XBO1600W, XBO1600WCLOFR, XBO1600W CL-OFR and other variations. Product Warning: Xenon Short Arc lamps emit harmful ULTRAVIOLET RADIATION, are under HIGH PRESSURE, require a HIGH VOLTAGE ignition, and can GENERATE OZONE (unless designated "OFR".) These lamps get VERY HOT during operation, and remain hot after operation for a significant time. Avoid direct or reflected exposure as this can cause serious skin burns and eye injury. This lamp should only be operated in properly designed and maintained equipment. Proper protective gear should be worn at any time the lamps are to be handled.