Yes it is called expanded steel. The name of the metal yard in Everett is Everett Steel (south of Lowes).

Don't know if they have stainless, but they could probably get it. It is the only way to go as far as upkeep. With proper care, the steel grate will work as well.

Pick up some angle as well (1.0" would be perfect) Take it to a local steel fabricator, and have them weld you up a frame to fit your Queue.

It will be the cat's meow.