Cross Reference
| Manufacturer | Ordering Abbreviation | Part Number |
| GE | LU400 | 44054 |
| Osram Sylvania | LU400/ECO | 67533 |
| Philips | C400S51/ALTO | 36881-1 |
| Class | LU Series |
|---|---|
| Lamp Type | High Pressure Sodium |
| Ordering Abbreviation | LU-400, ED18 |
| ANSI Spec No | S51 |
| Wattage (W) | 400 |
| Bulb Type | ED18 |
| Base Type | Mogul (E39) |
| Initial Lumens (lm) | 48000 |
| Mean Lumens (lm) | 43500 |
| Lamp Life (Hrs) | 24000 |
| Ballast ANSI Code | S51WA-400 |
| Case Pack (Qt.) | 12 |
| Lamp Finish | Clear |
| Operating Position | Universal |
| Color Rendering Index | 22 |
| Color Temperature (K) | 2000 |
| Max. Overall Length (In.) | 9.75 |
| Light Center Length (In.) | 5.75 |