- Average Life: 20000 hr
- Catalog Number: HR400A33
- Color Rendering Index [CRI]: 15
- Color Temperature: 5700 K
- Country of Origin: CHN
- Designation: HR400A33
- Dimensions: 4.625 in Dia x 11.31 in L
- Fixture Type: Enclosed/Open
- Gross Weight Per Pack: 0.7300 lb
- Lamp Finish: Clear
- Standards: ARRA CompliantBuy American Act CompliantRoHS Compliant
- Type: HID
- UNSPSC: 39101615
- UPC 11: 04316823974
- Stock Status: NONSTOCK
- Brand: GE
- Manufacturer: GE Lighting, a Savant Company
- Lamp Base Type: E39 Mogul Screw
- Lamp Type: Mercury Vapor
- Lumens: 21000 Lumens Initial, 14700 Lumens Mean
- Shape: ED37
- Wattage: 400 W
GE Mercury ED37
- Features
| 11.31IN Length |
| HID is generally the most efficient light source |
| Better efficiency almost always means lower operating cost |
| Most HID lamps have life ratings that are better than incandescent lamps and similar to fluorescent lamps |
| An HID lamp produces high light output from a relatively compact source |
| Like incandescent, it is a point light source, which allows for good optical control |
| Phosphor coated deluxe lamps provide good color rendering |