Illuminate your indoor space with the Satco 8 Inch Circline Rapid Start Fluorescent Light Bulb. This energy-saving tube has a cool white color temperature ranging from bright white/cool white (3500K - 4100K) and emits 1200 lumens of bright light. With a bulb wattage of 22W, this fluorescent tube has a long bulb life of 10,000 - 14,999 hours, making it ideal for indoor use. This Satco fluorescent tube has a 4-pin connector and a bulb shape code of T9. It is designed for indoor use only and has an Energy Star rating of 9 stars. Additionally, it features a rapid start technology that allows for quick and easy installation. Light up your indoor space with this energy-saving and long-lasting fluorescent tube.