Warped and not thick stainless

I purchased this stainless baking sheet for cooking bacon in the oven. I was listening to hear if it "popped" or warped- the oven was set at 400 degrees. It did not warp until I touched the pan with pot holders to remove it. It splashed bacon grease all over my arms and left burns. I am going to look into returning this pan. I wouldn't recommended the pan. Additionally the rack does not sit flush on the pan, it is not level.

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