Description Swimming Pool Light Bulb 12v R40 an internal heat shield prevents separation, heat-resistant cement assures no loose bases, and brass base. Multi-filament supports resist vibration, internal heat shield prevents separation, heat resistant cement assures no loose bases, brass base resists corrosion. Thicker filament and glass helps withstand heat. Swimming Pool Bulb 12v R40 which is also known as underwater lights, are waterproof lights that can be placed in swimming pools to add color and character to the water. They can also make the pool reflect the yard or other features, improve visibility at night, and change the mood of the area. R40FL500/HG 500-Watt, 120-Volt, R40 med base incandescent Replacement bulb Incandescent 6-1/4 in. L Show More Show Less
