I think whoever posted the original description got confused about which object was being displayed for sale. You just need to ignore it because it is not related to the copper grill mat
yes, it can be cut to fit your own grill.
if your grill requires lava rocks, the answer is yes! The mat is a tool you use to grill with.
The grill mat is made mostly of copper. It is to be used on gas, propane or electric outdoor grills. They are washable and reusable and help keep grill clean.
The mats are very thin. I have not tried putting them in the dishwasher for that reason. They are very easy to clean with soap and water.
You will need to use hot water and soap but they may still be a little greasy. A small amount of grease will help lubricate the grill grate.
Seat and backrest is definitely not for this item. That bullet has to be for another item and not this one. These are copper grill mats
Yes..... They will come out clean.
I don't see any reason why not, as long as the pizza fits on the mat.