The metal aluminum housing provides excellent cooling performance for these LED downlights. Covered with acrylic panels, these downlights have better lighting effect than those with plastic panels. Easy Installation: Cutout hole size: 75mm-95mm, installation depth: about 35mm, connect to AC220V power supply directly, no transformer or other accessories required. Panel downlight metallic 7W cool white LED, color temperature: 6500K, uniform light color, no UV rays, no eye irritation, better eye protection. Recessed ceiling lights with low consumption: Up to 90% energy saving compared to halogen bulbs, more than 25,000 hours lifespan. Ideal for living room, bedroom, corridor, hotel, office, library, KTV, basement, department store and many other places where you need a bright ceiling light.