4 Pack EL-22 Classic Light Replacement BulbCompatible for EL-22 Classic 4 Pack of CFS 9 Watts U/V Light Output.6.5 inch Overall Length. Compatible for EL-22 Classic Light Bulb.DO NOT use as a stand alone. Simply pull out the old bulb and plug-in the new one. Professional black light blue bulbs with high intensity 365nm peak wavelength. For best performance replace it every 3000-4000H, (About 4 -6months). ASIN B0BNY4LMY8 Color 4 Pack El-22 Shape U Shape Voltage 110 Volts (AC) Wattage 9 watts Bulb Base G23 Brand Name Dameiol Efficiency 40-70 lm/W Light Type Fluorescent Model Name EL-22 Bulb Style Name Classic Unit Count 4.0 Count Item Weight 0.25 Pounds Light Color Blue Manufacturer Dameiol Model Number EL-22 Power Source Corded Electric Material Type Glass Control Method App Item Type Name CFS 9W BL350 Bulb Shape Size T Controller Type Push Button Number of Items 4 Light Source Type Cfl Power Consumption 9 Watts Included Components 4 Pack 13801 Bulb Indoor Outdoor Usage Indoor Light Source Wattage 9 Watts Color Rendering Index 80 Connectivity Technology Normal bulb Manufacturer Part Number #13801 Specific Uses For Product Lamp Accepted Voltage Frequency 100 to 120 Volts and 60 Hertz Light Source Operating Life 25000 Hours Incandescent Equivalent Wattage 9 Watts Manufacturer Warranty Description 1.