Bulbrite 40A/YB 40-Watt Incandescent Standard A19 Bug Light, Medium Base, Yellow [Pack of 12] Get the perfect light with the A19 E26 Medium Screw 40 watt 130 volt Incandescent light bulb. Box contains 1 bulb. Dimmable: Yes, Yellow Bug Average hours: 3750, Beam Spread: 360, MOD: 2.375, MOL: 4.25