A:AnswerThe wire-rack trays are 14.5" by 12", but the grooves at the sides are about 1/4" deep on each side. So, I'd say the usable interior dimensions are about 14" wide by 13" deep. The included pizza stone is 13 inches in diameter and fits in fine. Interior height is about 7.5".
A:AnswerYes. It functions with a button on the panel. It illuminates for approximately 30 seconds then goes off. You can repeat button press for additional illumination.
A:Answerdepends on number of slices and desired darkness. my 1-2 slices at medium 3 darkness takes 3 minutes or so. my guess is that the time doesn't increase much with more slices or darker.