Brighten up with this brand new in package Philips C100S54 bulb, with a medium E26 base. This sodium lamp requires a fixture with an S54 ballast for operation -- such as a outdoor yard light. Rated for 9500 lumens and 24,000 hours use. Easy purchase pickup for you. Nice price -- retail price elsewhere is $35. Buy now so you have this in stock when it's needed.