Specifications1.High lumen output,and low heat 2.Certificate:UL 2.super quiet and long life 4.T5 watts:8w,13w,14w,21w,24w,28w,39w ,54w Product Description Fluorescent Tubes will have your plants basking in sunlight all day and night. With a colour temperature of 6400K, the approximate colour temperature of the sun at high noon, combined..