Replace your 100-watt incandescent bulb with the energy saving Feit Electric 23W Daylight Mini Twist Light Bulb – 4 pk.. Using up to 77% less energy that lasts eight times longer, this Energy Star approved four-pack of 23-watt compact fluorescent bulbs are non-dimmable. Uses up to 77% less energy lasting 8 times longer. Energy Star approved. 4-pack of 23-watt compact fluorescent bulbs. Energy saving and non-dimmable use. Equivalent to a 100-watt incandescent bulb. Dimensions: 5L x 5W x 5H inches.