This is my 2nd Oster French Door oven. My first one wasn’t digital and didn’t have Airfry, but was convection. After several years of constant use, I thought it gave up the ghost (turns out, I’d just blown a fuse when I tried to use another appliance with a big draw on the same circuit). I read all the reviews (professional and amateur) on this and several other convection toaster ovens with Airfry. NONE of them are large enough to hold a 14 in x 10 3/4 inch full size muffin tin, except this one. There is another brand that has one similar to this Oster, but not quite as big and is known for not regulating the temperature very well, which is problematic if you want to do any baking in it. SIZE Size is very important to me, because I want to be able to cook regular size meals and some fairly large ones. One of the problems I had when shopping for this item was the fact that it was difficult to ever find out interior dimensions. Additionally, as it turned out, the posted exterior dimensions were incorrect., so I have measured everything exactly for the rest of you. All measurements below are in inches. W=Wide (side to side), D=Deep (front to back), H=High (bottom to top as sits on countertop). Outside: 21 3/8 W x 17.5 D x 12 3/4 H Inside: 15.5 W x 12 5/8 D (14.5 at bow out in back) x 7.5 H - See the regular wire rack. It bows out in the back to accommodate a fairly large size pizza. The height measurement is from the bottom rack to the inside top to more appropriately measure useable space (there’s space for the elements and crumb tray below what is included in this measurement). Below are the measurements of the items you see in the pictures: Muffin tin: 14 x 10 3/4 in (this is mine - didn’t come with the oven). Included Pan: 14 x 12 in Airfry grate: 15.5 x 11.5 IMPROVEMENTS I LOVE 1. The improvements made with this newer version is that it is digital (old one had dials) and has several pre-set cooking modes, including dehydrate and slow cook! I haven’t used all these yet, but the professional reviews I read say that the temp regulation is very accurate. Once you set the temp and time and press start, it displays “PrE” meaning that it is preheating. When the preheating is done, it beeps, turns on the interior light and the timer starts. 2. The doors have always both opened just by pulling one door, but now they will stay open without holding them if you open them all they way. In all the pictures I included, I had both hands on the phone and was not holding the doors open. 3. It has a light that stays on while it is cooking, so you can monitor your food as it is cooking. When the time has it expired, the oven and the light turn off automatically, which helps prevent burning your food. OTHER It gets fairly hot on top, so you want to be sure not to things on top of it. All of the reasonably priced convection ovens (and most of the expensive ones too) get hot on the top/sides/back/front. However, according to the professional reviews, this Oster wasn’t any worse than the others and not as bad as some. This is just something to be expected. Overall, I found this to be the best one to meet my needs. When I found out that I had just blown a fuse and that my old one was still working fine, I decided to go ahead and keep the new one and gave my old one to a friend that was happy to get it.