I was out today and came across a really nice and big sheet pan that was very reasonably priced. I brought it home and fit it into the oven and man is it a close fit. It takes up the whole rack. It slides in without touching the sides but there is less than 1inch forgiveness on either side. I have just a regular oven not convection. My concern is that the heat won't circulate properly with such a big pan. What do you think? Should i return it? I'm hoping it'll be ok because i could sure bake alot of cookies on it. I don't want to do a test 'bake' because they won't take it back if it is used.
If the plan is to use it only for cookies, a tight fit is probably fine, as long as the sides of the pan clear the sides of the oven by a 1/2 inch or so.
I'd suggest rotating the pan about halfway thru the baking time.
A pan used for cakes should never be that close to the oven walls.
Just my .02