I heard cement board spaced out an inch from the wall would work? The new stove says 13" from the back which is no problem but 30" from from the sides! I have it installed in a corner and it still says 30" from the rear stove covers to the wall. I only have 19" from the rear corners so I'm hoping there's some sort of setup i can rig up that will allow that clearance to be safe? This is a budget project so I'm hoping there's a way to do this reasonably. I was wondering how much the 1" spaced out cement board reduces the distance requirement? If not enough what if i use two so i have two 1" spaces. Are there other options such as the reflective foam boards or some sort of aluminum sheet or roll i can use to help? I already have two cement boards left over from another project so that's free material. I figure i can make spacers out of little pieces of cut up copper pipe.