Our 400W Metal Halide shown below is just $99.
Lamp included. Click here!
The permanent replacements may or may not be high bay lights. During a construction phase, a large building may need to be lit for work to move forward, but eventually (for example) several floors are put in, perhaps turned into office spaces or apartments or something that doesn't at all need high-powered lights.
The temporary lights are typically 400 watt metal halide lamps with extra layers of protection that are important for a construction setting. For instance, a standard metal halide lamp has the outer glass envelope (what we might consider the "bulb") with a small inner glass envelope where the halides are found. This is the area that produces the light.
Normally if the bulb breaks, the inner envelope also breaks, exposing people or objects to extremely high temperatures. Temporary high bay lights come with an additional and protective glass envelope surrounding the inner lighting area.
In addition, temporary high bay lights come in a metal cage to protect the lamps from larger flying debris, as you can see in the image here.
If you're in construction and need these lights for your next project, we carry them here.