Product review (4 stars): BE CAREFUL OF GAS OVENS!
CAREFUL! I didn't read the instructions fully and put the liner on the bottom of my gas oven. Just be sure to read - my fault for not. The liner covers the vents on the bottom of the oven which caused the gas not to flow properly and in turn cause a gas leak - INSIDE! Gas company came and had to turn off the gas then a plumber to fix the the leak. This could have been a catastrophic situation.
I gave it a 4 because the other reviews were so good, I figure it works great.