regardless of the grill result, I find 5 minutes after unpacking it in my opinion (even considering the price) are between the frame and the stone (about 33.7 cm diameter) is too much play, so in about 5 mm, so that the combination of stone-frame somewhat unsound or imperfect appears ... maybe I am doing a mistake and the stone expands the 5 mm from the heat, then I will revise my review ...