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.
18 watt light bulbs are commonly halogens, energy-efficient LEDs, or CFLs. 18 watt bulbs can safely be used in fixtures with a maximum of 18 watts or more. Maximum wattage information can typically be found printed inside the lamp socket.
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