Incandescent, Compact Fluorescent or LED?
...sealed, enclosed or recessed lighting fixtures. You also have to check the label and perhaps even call the manufacturer to figure out if a CFL will work in a horizontal, base-up or base-down fixture. CFLs perform poorly if turned on and off without at least 15 to 30 minutes to warm up. CFLs contain mercury and other toxins and must be disposed of responsibly. Stick to major brands. Avoid non-UL-listed cheap import bulbs. A trip to the light bulb a...