Verilux CFS23VLX Natural Spectrum Spiral Compact Fluorescent Light Bulb (CFL), 23 Watt, 2-Pack.

When you choose Energy Star approved Verilux Natural Spectrum Spiral Compact Fluorescent bulbs, you€ll see and feel the difference. The instant-on Natural Spectrum Daylight illumination is clear, crisp and brings the brilliance of true colors to life. Perfect for floor and table lamps when extra brightness is important. These 10,000-hour bulbs are the most visually efficient and are better for the earth because they produce less waste and use less energy to produce more light. You can save up to $170 over the life of the bulb in energy costs when compared to incandescent bulbs. Plus, Verilux donates $1 from the sale of each bulb package to national environmental organizations. Compatible with all standard light fixtures, but not recommended for use with dimmer switches.