GE 22752 50-Watt BlackLight R20. Benefits and features: GE’s niche bulbs offer innovative solutions for various lighting needs. Black Bulbs are made having a special filtered glass that absorbs the majority of the filament’s light, while developing a fluorescent or glowing effect when fond of certain objects and materials. Bulb Diameter (DIA) [Nom]: 2.500 in, Bulb Finish: Cobalt blue, Filament: CC-6, Manufacturing Source: 3372, Maximum Overall Length (MOL): 3.9300 in, Product Technology: Incandescent, Rated Existence [Nom]: 1,000-Hrs, Current [Nom]: 120, Wattage: 50GE incandescent lamps represents the condition of the skill of lamps for commercial and residential use, in addition to special purpose lamps for decorative or display applications. Within an incandescent lamp, light is generated by heating the filament to incandescence. The warmer the filament, the greater efficient it’s in converting electricity to light. However, once the filament operates hotter, its existence is shortened so the style of each lamp is really a balance between efficiency and existence. For this reason lamps of equal wattage might have different lumen ratings and various existence ratings. Incandescent lamps of comparable size are generally provided with different wattage ratings. The fixture wattage limit shouldn’t be exceeded. For product queries about GE Lighting products, please call GE Hotline 1-800-435-4448, Monday – Friday, 8:00 a.m. – 6:00 p.m. EST Stick to the recording prompts or ‘stay around the line’ to talk straight to a person service repetition.