When I received and unboxed the oven, I noticed that the oven's door glass had become un-mounted and slid into the oven door. Poor quality is to blame. When I dis-assembled the door to re-mount the glass properly, most of the Philips head screws didn't fit securely back into their pre-drilled holes leaving the oven door not securely fastened. The oven works, but I guess you get what you pay for.