| 500T12/4LR BELL/HOWELL | 500T12/4LR SYLVANIA | 500T12/4LR WESTINGHOUSE | 500T12/4LR120 BELL/HOWELL |
| 500T12/4LR120V BELL/HOWELL | 500WATT-T12-4-LARGE-RING BELL-HOWELL | 500WATT-T12-4-LARGE-RING SYLVANIA | 500WATT-T12-4-LARGE-RING WESTINGHOUSE |
| 500WATT-T12-4-LARGE-RING-120 VOLT BELL-HOWELL | 72470 SYLVANIA | DCS | DCS ANSI |
| DCS ASA | DCS INTERLIGHT | DCS SYLVANIA | DCS WESTINGHOUSE |
| DCS WIKO | DCS-120 VOLT ANSI | DCS-120 VOLT ASA | DCS-120V |
| DCS-120V ANSI | DCS-120V ASA | DCS-120V-500W | DCS-120V-500W ANSI |
| DCS-120V-500W ASA | DCS-120V-500W-P46S-T12-C13D-CLEAR-13200L-3250K-25H-BU-5-7/8MOL-3-1/2LCL-I-BELL-HOWELL-PROJECTOR-VENTED-BASE-DESIGN-MODERATE | DCS-120V/120V/500W/P46L ANSI | DCS/120 |
| DCS/120 ANSI | DCS/120 ASA | DCS/120V/500W/P46L ANSI | I/120V/500W/P46L/T12/C13D/25H |
| I/120V/500W/P46L/T12/C13D/25H/DCS | I/120V/500W/P46L/T12/CL/25H | I/120V/500W/P46L/T12/CL/25H/DCS | PH-500WATT-T12-4-LARGE-RING WESTINGHOUSE |
| PH-500WATT-T12-4-LARGE-RING-120 VOLT WESTINGHOUSE | PH500T12/4LR WESTINGHOUSE | PH500T12/4LR120 WESTINGHOUSE | PH500T12/4LR120V WESTINGHOUSE |
| PH500W/T12/4LR WESTINGHOUSE | PH500W/T12/4LR120 WESTINGHOUSE | PH500W/T12/4LR120V WESTINGHOUSE | SP500T12P46LC13D-120V |
| SP500T12P46LC13D120V-DCS | SP500T12P46LCL-120V | SP500T12P46LCL120V-DCS |