| ANSI Code | S51 |
| Average Bulb Life | 24,000 hr. |
| Bulb Base Type | Mogul Screw (E39) |
| Bulb Color Temp., Color Temperature | 2000K |
| Bulb Designation | LU400/LM |
| Bulb Finish | Clear |
| Bulb Manufacturers Warranty Length | 2 yr. |
| Bulb Min. Starting Temp., Bulb Minimum Starting Temperature | -30 Degrees C |
| Bulb Operating Position | Universal Burning |
| Bulb Operating Temp. Range | -22 Degrees to 50 Degrees C |
| Bulb Shape | ET18 |
| Bulb Start Type | Preheat |
| Bulb Technology, Lighting Technology | High Pressure Sodium |
| Bulb Type | High Output |
| Color Rendering Index | 20.0 |
| Country of Origin (subject to change) | China |
| For Enclosed Fixtures | Yes |
| For Use With | Enclosed Fixtures |
| Indoor/Outdoor Usage | Indoor/Outdoor |
| Item | HID Lamp |
| Light Appearance | 1000 to 2699K, Very Warm White |
| Lumens | 50,000 |
| Max Overall Bulb Length, Max. Overall Bulb Length, Overall Length | 9-3/4" |
| Shatter-Resistant | No |
| Standards | Meets 2012 Lighting Legislation Energy |
| Watts | 400 |
