I got some ordered as I needed some quick for a job. They held up to plasma cutting and grinding (Aluminum) so far. For the cost they’re great to have to prevent a fire or item being burned.
The edges are all folded over about 1 inch. The grommets are installed in the folded over section. This provides for solid base for the grommet. Hangs well and the grommets hold.
Matthew Keith 
