These ceramic warmer plates are made for melting jar candles without a flame. A great alternative for situations where a lit candle is not appropriate like work, dorm rooms, etc. No flame, no soot, but great scent! The warmer will fit candles up to approximately 3 1/4" wide. Measurements: 5 3/8" D, Heating Element Diameter 3 3/4", 1 1/2" H 120 Volts AC Only 60Hz 24 Watts.