Fits perfectly, heats evenly. Using shipping carton to store grates or griddle when not in use and that seems to work fine. High quality, I ‘ve been using Weber products for over 50 years and have never been disappointed .
We absolutely love our griddle insert, was such a great addition to our grilling experience. We have used it for grilling everything from pancakes to fajitas and everyone including our kids have given rave reviews!