shoulda searched 1st but just go by the wattage (obviously higher the watts the better) -ur gona have to be detailed and post pics of what ur trying to do here like howmany plants u want tot grow, whre ur growing, what kinda lights, etc
Thanks and sorry for being very blunt, well its basically a 2 plant grow, hieght (of the box) is 24(inches) by 18 by 14 (basically its 2 rubbermaid copys stacked on top of each other with dull sided foil) and im just deciding on the types of lights as its partly stealth anything that needs a ballast too obvious.