I would think the spaces is for the hear bulbs that make each burner hot. I'm sure if U order this product, it's something U will definitely love and if Ur not satisfied I'm sure U can return it to the store. I live it, it gets really hot and really fast if put on high and the oven produces even heat. I'm sure that you'll love this product. Not to mention it's made here in America.
God bless this country.