The Impact GCA Lamp (250W) (120V) is a clear, bi-pin ceramic base bulb for many different photographic light fixtures (including Lowel and Smith-Victor) and projectors.
| Code | GCA |
| Application | Stage and photographic lights, projectors |
| Watts | 250 |
| Volts | 120 |
| Color Temperature | 3200°K |
| Average Life Hours | 200 |
| Approx. Lumens | 6300 |
| Base Type | G5.3 - Miniature 2-pin: round 1.5 mm, 5.3 mm centered |
| Filament Type | CC6, burn base down to horizontal |
| Length | 2.2" (5.6 cm) |