Philips 409383 40W T12 Daylight Deluxe 6500K Linear Fluorescent Light Bulb (30 Pack), 4' This Philips 40-watt Daylight Linear Fluorescent light bulb brightens laundry rooms, bathrooms, or workspaces. Versatile for multiple applications, this 6500-Kelvin Fluorescent bulb is suitable for indoor, commercial, and residential use. Features a medium Bipin base. Low-mercury design creates a smaller environmental footprint. Philips reuses as much glass and packaging material as possible, reducing environmental impact. Lamp life of 20,000 hours. This product ships as a 30-pack and comes with a 1-year warranty.