This Impact GDA Lamp (500W, 120V) is a double-ended, single contact clear tungsten halogen bulb. It fits the Lowel V-Light, and many other brands of fixtures.
| Code | GDA-120 |
| Application | Stage and studio, projector |
| Watts | 500 |
| Volts | 120 |
| Color Temperature | 3100 K |
| Average Life Hours | 100 |
| Approx. Lumens | 11,000 |
| Base Type | R7s |
| Filament Type | CC8, burn in horizontal position |
| Length | 5.3" (13.5 cm) |