Incandescent light bulbs were once considered industry standard - the kind that pops into mind when one pictures a "light bulb." They mostly see residential household use, though they often find their way into restaurants, hotels, and other sectors of hospitality where warm light is appropriate for relaxed, intimate settings. Because they use more energy than modern alternatives, incandescent bulbs generally are more expensive to run, and produce more heat in the areas they illuminate.

Satco's model S4981 light bulb uses 40W of power, with a brightness of lumens. It fits a Medium (E26) base, and produces a blue-colored light. With typical use, it lasts about 1000 hours on average before requiring a replacement. This product is sold in multiples of 24. It comes with a standard manufacturer's warranty, and its UPC is 045923049811.