Philips 40W 16 In. Cool White T9 4-Pin Circline Fluorescent Tube Light Bulb

T9, 4-pin, circline fluorescent tube light bulb. Ideal for a wide variety of indoor applications such as garages, workshops, and basements, as well as commercial applications. Long lasting, with a rated life of 12,000 hours. Contains less mercury than standard fluorescent light bulbs.