Exactly same dimension can directly replace T8 4Ft Fluorescent tubes to get better spectrum and fast growing and energy saving for your T8 Grow Lights system.
Great for build up a own grow spectrum of grow system with Red and White tubes for different stages.
Ten times more Blue with 460nm lightwave length than a regular F32T8 Fluorescent grow tube.
LED tubes run off of a fluorescent ballast. Just untwist flor. bulbs and twist in LED tubes.
Three years warranty, UL listed and brown hard paper tube packaging via regular shipping shatterproof.