Illuminate your space effectively with these F40T12 linear fluorescent tubes from Philips. Each 48-inch tube delivers a bright 2600 lumens while consuming just 40 watts of power. The 4100K cool white color temperature provides clear, crisp lighting ideal for commercial spaces, workshops, garages, or utility areas. These T12 fluorescent tubes are direct replacements for Sylvania 21371 F40CWX and Philips 423129 F40T12/CW models, making upgrades simple and hassle-free. The 6-pack bundle ensures you have backup bulbs ready when needed. These fluorescent tubes offer reliable, consistent illumination for areas requiring broad light coverage. Perfect for both residential and commercial applications where steady, uniform lighting is essential.