The commercial electrical contractor's source for LED MR11s and MR16s. Compare and buy energy-efficient LED MR 11 and MR 16 lighting, and other GU10 base lamps for your commercial project or retrofit. MR11 LED bulbs and MR16 LED replacements bulbs are currently used in applications which require directional lighting such as recessed ceiling lights, desk lamps, track lighting, pendant fixtures, retail display lighting, and landscape lighting.  MR16, along with MR11, is a common size of LED bulb.  MR16 replacement bulbs work in many commercial lighting settings which include: retail settings, office & interior, or flood & landscape.