The most popular industrial and warehouse lighting in place today is metal halide lighting. Workspaces in these environments are typically large and tall, which means companies need a large amount of light and a long lifecycle. Standard bulbs don't really do either of those very well. The technology that metal halide light bulbs rely on requires a special fixture with ballast in order for it to work. We have a full line of ballasts in addition to the hundreds of metal halide light bulbs in this section.
In order to promote brand loyalty and to make the process of finding replacement bulbs easier, many lighting manufacturers have chosen to create a name specifically for their metal halide bulbs. For Sylvania, the name would be Metalarc. GE refers to theirs as multi-valor lamps. Philips often uses MasterColor for many of their lamps. In almost all cases, bulbs can be interchanged among the brands, so there is no need to worry about an exact match. You will, however, want to match the wattage and base type. You should always consider other factors, too, like pulse start models, or the various bulb shapes and sizes.
When compared to other HID bulbs, Metal Halide bulbs tend to have the lowest average life, but they provide a tremendous value in color temperature and color accuracy. If you see lights that are very orange and you notice your red car actually looks brown under it, such as with many street lights, they are not metal halides. For places like a machine shop, warehouse, or large retail outlet, metal halide light bulbs are an excellent choice.