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MR16 LED Bulbs

MR16 bulbs are 2-inch reflector bulbs used in track lights, small recessed fixtures and landscape lighting.

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MR16 bulbs are 2-inch reflector bulbs used in track lights, small recessed fixtures and landscape lighting.

  • Base and voltage. Most MR16 bulbs have a GU5.3 two-pin base and run on 12V from a transformer. The same-size GU10 bulb has a twist-lock base and runs on 120V; the two are not interchangeable.
  • Transformer. LED bulbs draw far less power than halogen, and some older electronic transformers need a minimum load to work properly.
  • Beam angle. Narrow beams of 15 to 25 degrees accent an object; 36 degrees and wider light a general area.

Related: landscape lighting.

Base and shape reference: light bulb base types chart. All bulbs: LED light bulbs.