Great shelf! Each of the squares are a nice size. A bit wonky to hang and insure it is where you want it when done. They give a paper template, but it is only one strip and I even found it didn't line up with the holes on the shelf. My tip is to measure down from the widest top shelf both the top and bottom of the "slot" and put the holes in relation to the top of that slot since the unit hooks on and drops down when mounting in that channel. Another tip is using larger and better anchor bolts for any not in a stud. What is sent with the unit, I feel are a bit small.