Metal Halide Bulb (MS400/BU/PS) is the 400W / 4000K version. This model is a maintenance lamp for an existing HID luminaire using the matching lamp system. Choose it by the ballast lamp designation and base, not by wattage alone. This listing identifies the version as pulse-start; keep those requirements aligned with the installed fixture.
The E39 lamp base is the physical interface for this model. For the existing installation, 4000K offers a white-light appearance between warmer residential tones and cooler daylight colours. Allow for 12 units per pack when ordering this model.
| Brands | Major Brand |
|---|---|
| Color Temperature | 4000K |
| Life Hours | 15,000 |
| Wattage | 400 |
| Lumens | 36,000 |
| Product | Metal Halide |
| Color | Natural White |
| MPN ( Part No.) | MS400/BU/PS |
| Base Type | E39 |
| Rating | Enclosed Fixture Only |
| Pack Quantity | 12 |