HP36WFL35 12V PAR36 Halogen Wide Flood Lamp. Prism® HaloXen® PAR 36 lamps utilize a Halogen/Xenon gas mix to provide white light, long life, and 90% lumen maintenance. Operating at lower wattages than standard incandescent lamps, they can reduce your energy costs by up to 33%. Additionally, the long life of Haloxen lamps offers as much as twice the rated life of Incandescent PAR lamps.