My shed is 8 x 6. I put in a number of roosts. The top 3 are the same height. THe middle levels are 2 roosts at the same height, and the lower roosts are the same height. It allows choices. When the weather is cold, they squish in so close I can hardly count correctly. WHen it's hot, they spread out, and lower in the pecking order gets a lower roost. 48 linear feet to choose from.