Just bought my ok joe highland and looking to put the I think it's expanded metal grates on. I've searched a few threads but I'm hoping to get some specifics on what's needed to buy to build it. The material is what I'm looking for. I hope to have two grates but what size square tube / or angle should I buy ( and I've searched lowes / hope depot for both are those decent to buy and I believe I seen the expanded metal sheets are the #9 3/4 ? Please correct me if I read it Wrong. Also could o use the same expended metal I buy for grates to build my charcoal basket. Any info be great.