Ask not what your BBQ grill can do for you, but what you can do for your BBQ grill. Buy your backyard grill a Bakerstone Basics Pizza Oven Box Kit ($86) and bake gourmet pizzas in just 2-4 minutes.
The ovens outside dimensions are 16.3″ wide, 14″ deep and 4.75″ tall. Outer housing made with heavy duty enameled steel with a refractory stone baking chamber.