How big should my return air grill be? This is one of the most common questions that people who own an air grill ask. There really is no perfect answer to this question, since everyone has different things that are needed in order for their grill to function. The first thing to know is that return air grills come in many different sizes. What you should know about return air grills is that they are designed so that you can cook foods either on or off the grill. This means that you will have many different options when it comes to cooking. One way to find out the size of a return air grill that you should be looking at is to consider how much space you will have to use before you buy one. If you do not have a lot of room then you are probably going to want to stick with a smaller sized grill. Another thing to consider is the amount of time that you plan on spending outdoors. If you only plan on spending a couple hours outdoors then you should look into grills that are portable. Ou...