Hello, This room is 15'x15'. These are 54" wide full matters size bunk beds. You could use twins to make them a bit smaller. Or build one row of bunks in a smaller room. Feel free to contact us if you have any other questions.

So, to put 2 sets of bunks (4 total beds), you need the wall to be 15' long? I only have 13' so I am trying to figure out what to do

Each full bunk comes out a bit more than 4.5' from the wall, in this example. So, if installing bunks on opposite walls, with a 13' span, you'd have about 4' between bunks, rather than roughly 6' in this design. You could go for twin mattresses/bunks instead and retain more floor space, or have bunks on only one wall. If you are interested in more specific design assistance, please feel free to call our office in Whitefish, MT. Happy Creating!