GE 22752 50-Watt BlackLight R20 Light Bulb, 1-Pack Description From the Manufacturer GE 22752 50-Watt BlackLight R20. Features and Benefits: GE's specialty bulbs offer innovative solutions for a variety of lighting needs. Black Light bulbs are designed with a special filtered glass that absorbs most of the filament's light, while creating a fluorescent or glowing effect when directed at certain objects and materials. Bulb Diameter (DIA) : 2.500 in, Bulb Finish: Cobalt blue, Filament: CC-6, Manufacturing Source: 3372, Maximum Overall Length (MOL): 3.9300 in, Product Technology: Incandescent, Rated Life : 1,000-Hours, Voltage : 120, Wattage: 50GE incandescent lamps represents the state of the art of lamps for residential and commercial use, as well as special purpose lamps for decorative or display applications. In an incandescent lamp, light is generated by heating the filament to incandescence. The hotter the filament, the more efficient it is in converting electricity to light. However, when the filament operates hotter, its life is shortened so the design of each lamp is a balance between efficiency and life. This is why lamps of equal wattage may have different lumen ratings and different life ratings. Incandescent lamps of similar size are commonly available with different wattage ratings. The fixture wattage limit should not be exceeded. Features: 50-Watt Light Bulb Rated Life of 1,000-Hours BlackLight R20 Light Bulb GE for every application 50R20/BLB 6PK Product Details: Brand: GE Light Type: Incandescent Wattage: 50.00 Bulb Shape Size: R20 Specific Uses For Product: Lamps Brand: GE Light Type: Incandescent Wattage: 50.00 Bulb Shape Size: R20 Specific Uses For Product: Lamps Light Color: Blue Voltage: 120 Volts Unit Count: 1.0 Count Color Temperature: 2700 Kelvin Number of Items: 1 Shape: R20 Material: Glass Connectivity Technology: Normal bulb Controller Type: Push Button Power Source: No Color Rendering Index: 80 Item Package Quantity: 1 Light Source Type: Incandescent Light Source Wattage: 50 Watts Product Dimensions: 2.5"W x 3.93"H Control Method: App Manufacturer: GE Lighting Part Number: B000HJDAQU Item Weight: 1.6 ounces Item model number: 22752 Style: R20 Blacklight Finish: Blue Batteries Required?: No Date First Available: August 9, 2006