117 t5 21w fluorescent tube products are offered for sale by suppliers on Alibaba.com, of which energy saving & fluorescent accounts for 74%, led tubes accounts for 11%.
A wide variety of t5 21w fluorescent tube options are available to you, such as straight, tube and bulb.You can also choose from fluorescent, cfl and led t5 21w fluorescent tube,as well as from white, blue, and black t5 21w fluorescent tube, and whether t5 21w fluorescent tube is t-tube, t4, or g24q-3.