[Fit Models]: T8 10W replacement bulbs compatible with Aspectek, Liba, Micnaron, and Lulu Home most 20W electric bug zappers; EPA Est. No. 97341-CHN-1; Please measure and confirm the bulb size of the bug zapper before purchasing [365Nm Wavelength]: Emits a peak wavelength of 365nm ultraviolet light, which is highly attractive to mosquitoes and other flying insects; This wavelength falls within the UV-A spectrum [Long Lasting]: Long-lasting UV bulbs rated for over 3000 hours; For optimal performance, replace the T8 10W UV bulbs every 3 to 4 months with continuous use [Bulb Size]: Bulb dimensions: 13L x 1W x 1H inches; Total length including pins: 13.5 inches; Wattage: 10W Color: As shown Material: Glass Package Contents: 4 x Bug zapper light bulbs