Upgrade your lighting with this Philips 40-Watt 16 in. Circline Linear T9 Fluorescent Tube Light Bulb in Cool White. With a bright white/cool white color temperature (3500K - 4100K), this indoor bulb emits 2500 lumens while saving energy. The frosted finish adds a touch of elegance to any room. This specialty bulb has a bulb life of 10,000-14,999 hours and is Energy Star rated, ensuring you get the most out of your purchase. Connectors are 4-pin style, and the bulb shape is a circle. Compatible with 120V voltage, this fluorescent tube is perfect for lamps, lighting fixtures, and ceiling fans.