No opening and closing required. Typical bindings purposely complex to make it hard to get away with. Mine are mounted on the tool boxes in my pickup truck bed. I set them up so that the angle can be adjusted depending on the job. I'm driving 72 miles an hour on the freeway. There is no sign of moisture ingress. Winter will be a real challenge. It's bright. I would not recommend using them in a typical street application. Most likely, they dazzle oncoming traffic. For the price they are impressive.
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