Note: the discription to this item only. Credit guarantee that all pictures in - kind shooting, please rest assured to buy. Discription: overall dimensions, see below picture internal structure, see below pictures We can accept OEM, welcome discusscooperation details! Contact us if you need more details on Energy Saving Lamp. We are ready to answer your questions on packaging, logistics, certification or any other aspects about 4u Lamp、T2 Lamp. If these products fail to match your need, please contact us and we would like to provide relevant information.