If you are looking for a powerful and energy-efficient lighting solution for the exterior of your property, PAR30 LED long-neck light bulbs may be the perfect solution for you. PAR30 stands for parabolic aluminized reflector, which refers to the hardware inside a PAR30 bulb that allows it to control light more precisely than competing bulbs. The "30" represents the diameter of the bulb in 1/8-inch intervals, meaning that all PAR30 bulbs are 3.75 inches long. The PAR30 bulbs on this page have been manufactured with LED systems and long-necked designs for added benefits that make them ideal for any application where powerful, directed lighting is needed.