I use these for potato wedges, steak fries, bean burgers, veggies, and more. They have heft and haven't warped after many uses. We wash by hand and after a few uses, I have taken to using parchment paper for easy clean-up--regular-sized Silpats didn't fit. I'm able to fit two of these pans side by side vertically in our oven. They have a 375-degree limit. Bought two and have since bought two more in case the first two ever wear out. Dimensions are 17.9"w x 11.7"d exterior and 15"w x 10"d interior cooking surface.