For one plant that u want to big like big bud or jack or sumthin...for max yield get like a 6 or 7 foot cielingat least a foot wide if you trim the sides but i would get it more like 2 or 3...closets are best for one...u can buy a cheap storage shep or build ur own it is actuallly pretty easy. peace
mine is approx 3.5'x3.5'x4'.....and i have more height if needed but i don't let them go that big, too much hassle if i need to flush the medium....trying to take a 6' plant to the toilet to flush is quite difficult.....hits all the door frames....lol......Peace out....Sid