I put 9 of these lights into our house. They are very thin against the ceiling ( just what I wanted ) give great light and I put them on dimmer switches .  
I called Wayfair and their representative helped me to find this light and help answer all the questions I had before making the final decision.  The person that assisted worked with the manufacturer to get me everything I needed.  How great is that. Can't ask for better assistance.   Because of such great care from Wayfair I ended up getting my Kitchen Island light from them.  Love all my lights.