This Feit Electric DayLight 20 Watt Ecobulb is equivalent to a 20 Watt bulb. The light bulb is extra small to fit more applications. It can last up to 11 years or 12,000 hours. It is output 1255 lumens, and it is 6500 Kelvin. The light blub is approximately 4" in length. The light bulb comes packaged 7" x 6" hanging blister pack that contains two bulbs. The blister pack comes packaged in a countertop display of 7.50" x 15.50" x 2.25 with six pieces.