Here at iLighting we stock a wide range of 4 Pin CFL lamps, all of which are incredibly efficient and with long lifetimes. With a range of 9 to 55 watts, and with many varying color temperatures, we are confident you will find the right product for you. 4 Pin CFLs have fantastic wattage to lumen ratio, giving you great light output while cutting down on your energy bills. When you combine that with their incredibly long life times, you end up with a lamp that could save you a lot of money. As these bulbs make use of Compact Fluorescent technology they can be used in enclosed fixtures, and the increased temperature will even cause an increase in performance!