This was a part of my first purchase at Mayfair. I ordered this light bar and the Mayfair screen added  light bulbs suggesting they be purchased together and I assumed that the light bulbs could be used with the light bar cans. I called Wayfair to ask the question - the site indicates easy installation and was told an electrician was suggested. 2 professional electricians installed the light bar in 3 hours (total of 6 hours) and said the bulbs were not compatiable and the electricians left and purchased bulb size MR16. The bulbs required were not a screw in but the ones I thought were the correct size based on the website lumping the two items together are screw ins. What I believe I have learned is to not trust the desriptions of Wayfair products on its site without calling and asking more questions. A costly mistake for an 82 year old retirement community resident.