Philips 40 Watt T9 4-Pin Circline Fluorescent Tube Light Bulb is a versatile and long-lasting lighting solution designed for a wide range of indoor and commercial applications. This T9 circline fluorescent tube bulb features a 4-pin base, making it compatible with fixtures commonly found in garages, workshops, basements, and commercial spaces. It provides efficient and reliable illumination for various settings. One of the notable features of this bulb is its long life, with a rated life of 12,000 hours, reducing the need for frequent s and providing extended use. Additionally, it contains less mercury than standard fluorescent bulbs, contributing to environmental sustainability. Model Number: 391185