Product review (5 stars): I'll always use these
Replacing older ones, that's all. Except... they weren't as deep as my old ones so I had to use 2. That's OK though because I bought 6, so I have backups. And, by the way, I placed them directly on the floor of my ELECTRIC oven. I read where people used them on bottom rack only. I wouldn't want these if I had to do that. That would interfere with heat transfer and affect baked items, FYI.