Pentair 78451100 Amerlite 15' Cord 500W 120V with Stainless Steel Face Ring Stainless Steel Face Ring With Uni-Tension Clamp 8-3/8 In. Prismatic Tempered Glass Lens For Optimum Light Diffusion. UL Listed When Installed In Pentair Niches Heat-Sensing Cutoff For Low Water Protection Allows Bulb Changes Without Lowering Water Level