The large rectangular grates perfectly fill up one rack on a standard oven. The round ones are obviously pizza size, but the uses for these can extend far beyond pizza. If you are going to take my advice on using these, then I highly suggest you also pick up a roll of silicone oven liner to catch any debris or drippings (https://www.amazon.com/Nonstick-Bottom-Electric-Toaster-Microwave/dp/B07QPTTH8Q/ref=mp_s_a_1_5?dchild=1&keywords=silicone+oven+sheets&qid=1609770857&sr=8-5). So we have used the round grates for years, sometimes for homemade or frozen pizza, but one day I figured out that these allow you to bake French fries about as can be. Yes there are now air fryers, but there simply is t enough capacity unless you are cooking for yourself. If you place one oven rack on the lowest position and put the silicon oven mat on that, the other rack in the position just above center of the oven, and preheat to 425 (if you have convection use it, if not don’t worry about it they will still be great fries). Over a sink load the grate up with fries, single thickness and avoid clumping together. Close the oven and set the timer (as instructed on package usually 22-24 minutes). Leave them alone, don’t open the oven and let the hot air out. When the oven timer goes off, pull the fries out. Your fries will be as crispy as they would fried in grease. Some fries work better than others, and convection will work a little faster and truly emulate the fried texture. Put fries in a bowl and season with kosher salt, season salt, old bay, barbeque shake, or whatever else you can come up with. No fries aren’t the healthiest food, but when you want them there is no better way to make them. As I said earlier, the circles are good, but the large rectangular grate is better. You can still cook a pizza on it, but you maximize your cooking area. Likewise using 2 circular grates on two different racks can be done, but you need to swap the trays positions several times so cooking will be even. We have cooked fries, chicken tenders, fried cheese, battered fish, and many other frozen fried foods and never had a problem. I will say that that especially if you are doing battered fish or fried cheese the silicone sheet below is almost a must. Making pizza, roll your dough out on a piece of oven safe parchment paper, transfer doe and parchment to the grate and cook. You really will start to have that feeling of satisfaction where there used to be settling for what you could do at home. Finding these rectangular racks was a dream during covid with both sons home. When I didn’t have any ideas I could make chicken tenders and fries for them and a fried chicken salad for my wife and I. Give these a try, you won’t regret it and the next time you have a French fry craving you will be glad there is a choice between no fries and 500+ calories of the fried variety.
