The glass tube broke upon installation due to poor quality. To secure the tube, you tighten 3 screws which hold it in place. With very little pressure, the glass tube broke. Very disappointing. I have installed enough of these types of lights to know that this was not a case of user error. This was a quality issue. I guess you get what you pay for. I would love a replacement of the glass tube, but have yet to take any steps to receive one, other than this, due to a lack of confidence that my issue will be addressed. Please, prove me wrong. Thank you.