100% CTT and DAX Compatible Replacement Bulb for many popular projectors, viewing and editing equipment. This Sylvania CTT bulb is compatible with many different projector and slide projector models from major manufacturers such as Applied Sciences Incorporated, Bell and Howell Company, Beseler Photo Marketing, Charles Beseler Company, Eiki International Incorporated, Hoover Brothers Incorporated, Hoppman Corporation, Ingenuics Incorporated, International Audio Visual Limited, McClure Projectors Incorporated, RCA Corporation, Spindler and Sauppe Incorporated, and Terminal Data Corporation to name a few.