Cross Reference
| Manufacturer | Ordering Abbreviation | Part Number |
| GE | MVR400/U/ED28 | 18904 |
| Osram Sylvania | M400/U/BT28 | 64488 |
| Philips | MH400/U/ED28 | 27862-2 |
| Class | UMH Series |
|---|---|
| Lamp Type | Metal Halide |
| Ordering Abbreviation | UMH-400/U, ED28 |
| ANSI Spec No | M59/E |
| Wattage (W) | 400 |
| Bulb Type | ED28 |
| Base Type | Mogul (E39) |
| Initial Lumens (lm) | 34000 |
| Mean Lumens (lm) | 22000 |
| Lamp Life (Hrs) | 20000 |
| Case Pack (Qt.) | 6 |
| Lamp Finish | Clear |
| Operating Position | Universal |
| Color Rendering Index | 70 |
| Color Temperature (K) | 4000 |
| Max. Overall Length (In.) | 8.31 |
| Light Center Length (In.) | 5.00 |