Re: 36" vs. 38" When I laid out my oven on my workshop floor as a dry run it looked tiny. (mine is a 36) When I crawled into it afterwords, to scrub the mortar off the joints inside, it seemed as big as Grand Central.
Is an inch on each side worth re doing your plan? Maybe not. If it's at the expense of insulation on the sides and back, you may not want to. |