The replacement bulb suitable for T9, T8, T6, X3 bug zapper Size: 7.87" L x 1.77" W x 0.78" H, Please measure your original tube size before purchasing The UV lamp which emit 365nm wavelength blue light, attracts flying insects to the device Before replacement, please unplug the device and allow it to sit for 2 hours to allow all the electricity in unit to disperse Easy to install: Open the tray counterclockwise, then remove the screws and bulb, insert the replacement bulb, and ensure it is correctly placed on the socket
