Start your search by choosing your bulb shape. Most shapes are available in multiple cap sizes and bulb types, including LED, CFL, halogen, and incandescent.
4 watt light bulbs are commonly energy-efficient LEDs or energy saving fluorescents. 4 watt bulbs can safely be used in fixtures with a maximum of 4 watts or more. Maximum wattage information can typically be found printed inside the lamp socket.
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