Vibia Alpha Wall Sconce

I purchased 2 of these units for my movie room. They are very attractive and the light diffuses well, but the lights are unreliable. Even though they are in a room that's cool and well ventilated, they overheat quickly - they dim and flicker before shutting off. On average each light will remain steadily lit for only about an hour. I had an electrical contractor come in to re-install - he could find nothing wrong with the original install and I continue to have a problem. These lights are not cheap. I expected a much more durable product for the price. Do not waste your money on this product.