Hey Fellas. I have looked and haven't really found an answer.. Say I am allowed 6.5" of clearance for stove to combustible wall. And i put a Shield behind. Lets say a 3 5/8" thick brick wall with 1" air gap . Total of 4 5/8". That leaves 1 7/8" between stove and shield. Is there a minimum distance for this? What if I moved my air gap in back out to 2" inch. Stove would be 7/8 inch from front of shield. Could it be 1/2 inch from front of shield?