GE 16648 40-Watt CFL Plug-In High Lumen Biax GE Biax T5 3500K - Facilities. Color Rendering Index (CRI): 82, Color Temperature: 3,500 K, Current Crest Factor [Max]: 1.70000004768371, GE Designation: FT40W/4P, Initial Lumens [Nom]: 3,150.00, Lamp Current: 0.320 A, Maximum Overall Length (MOL): 22.5000 in, Mean Lumens [Nom]: 2840, Mercury Content: 10.000 mg, NEMA Designation: FT40W/2G11/RS/835, Nominal Initial Lumens per Watt: 79, Nominal Length: 22.500 in, Picograms of Mercury: 176.1 pg, Product Technology: Compact Fluorescent, Rated Life [Nom]: 20,000-Hours, Starting Temperature [Min]: 10 -DegreeC, Voltage [Nom]: 126, Wattage: 40GE Compact Fluorescent lamps (CFL) offer many advantages that include cost savings, extra long life, light output, and color rendering. With this CFL you'll get dramatic energy cost savings. up to 77 percent vs. incandescent lamps of comparable light output. The extra long life. most last 8 to 10 times longer, and some last up to 20 times longer, than standard incandescent lamps. High light output comparable to, and in many cases exceeding incandescent lamps replaced. Excellent color rendering. rare earth tri-phosphor provides such high-quality color you won't believe it's fluorescent. Many lamps use amalgam technology which provides stable lumen performance when operated in any position, over a wider, range of ambient temperatures.