Aug 11, 2010 · The garage is 10' wide and I'd like to make the shelf 2' out from the wall. I will put a 2x4 ledger on three sides. The fourth side (running from wall to wall), will have joist hangers holding up a 2x4. Then I was going to nnect the two 10' long 2x4's with studs every two feet. Then sheet it with 3/4" plywood.