If used where light is not needed all the time, this can be a good product. HOWEVER, the exit lights (which is what they are designed for) must always be on. This lamp is rated for 1500 hours. If it takes that long, it takes 62 days. That means you change the lightbulbs every two months. The process of replacing output tubes is even more troublesome than the cost. It would be better to use a longer lasting bulb for the exit lights.
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