GE Halogen Bulb, Wattage Rating: 150 W, 120 V, Lamp Base: E11 Candelabra, Lamp Shape: T4, Lumens: 2800 Lumens, Lumens Efficiency: 19 Lumens/W, Light Color: White, Color Temperature: 2900 K, Average Life: 2000 hr, Dimensions: 4.9 in L x 7.53 in W x 10.37 in H, Filament Type: CC-8Specialty bulbs offer innovative solutions for a variety of lighting needsUses halogen technology for a brighter, crisper lightHalogen bulbs deliver crisp, white lightUnsurpassed light quality is ideal for adding depth, drama and interest to any room or spaceHalogen specialty bulbs to create a dramatic effectLasts 1.8 years based on 3 hrs per day usageT4 shape with candelabra base for use is outdoor carriage and post lights