T5 Fluorescent HO Grow Lights (24", 10000k) 4-Pack HIGH OUTPUT T5 GROW LIGHTS FLUORESCENT LAMPS Spectrums: 3000K BLOOM, 5400K Super Veg, 6400K Grow, 10,000K Finisher Available in 4-pack or quantities of 4-packs Sizes: 2 ft (24w and 2,000 lumens) and 4 ft (54W and 5,000 lumens) F24T5HO Lamp Type and F54T5HO Lamp Type T5 HIGH OUTPUT Horticultural Lamps