Product Description Brighten Your Commercial or Workspace with Clear 4100K Light Replace outdated, failing fluorescent tubes with this high-value 8-pack of standard F40T12/841 linear bulbs. Designed for performance and reliability, these 48-inch bulbs deliver the bright, cool white (4100K) light needed for detailed tasks and productive environments. Product Specifications: Wattage: 40 Watts Bulb Shape/Size: T12 (1.5-inch diameter) Base: G13 Bipin Color Temperature: 4100K (Cool White) Brightness: Approximately 3150 Lumens Length: 48 inches (4 Feet) Average Rated Life: Up to 15,000 hours This product is a 48-inch T12 fluorescent lamp. It is designed to operate in fixtures with compatible T12 magnetic or electronic ballasts. It is NOT compatible with T8 fixtures or ballasts designed exclusively for T8 lamps. Always verify your fixture's requirements. Package Includes: Eight (8) F40T12/841 Fluorescent Linear Tubes (48-inch), securely packaged.