Product review (2 stars): Have only had these a couple days and fit oven ...
Have only had these a couple days and fit oven perfectly, wished I had them a year ago when the oven was new, could have avoided some stains where food dripped.

Update after several months - had to reduce my rating as one of the liners I gave to my friend who has a new oven in her apt, she followed the instructions as we understood them so she felt fine with putting the mat on the bottom of the oven - big mistake. First time she turned her oven on, major smoke started billowing out and the temp had only gotten to 140F - of course she shut the oven down and removed the mat immediately but it has still taken 3 days so far to get the smell out of her place.  We feel the instructions should state that the mat should be placed on the LOWEST RACK, not on the oven floor.  Very disappointed and of course now she is afraid to try anything like this again.