Finding LEDs that both run on 120v (not 12v) and are dimmable for this application has been very difficult. My 10 year old Minka Aire fans use 120V MR-16 with the same pins as the 12V fans. As the LEDs are a bit longer than standard halogen bulbs I had to modify them by cutting the body to remove the lens as it is convex and protrudes a bit. (see photo). It doesn't matter as the bulb fits perfectly into the lens in the mount - the solid glass in the fan housing. Everything I need for these fans. However, if you don't want to modify the lightbulb, they won't work for you.