Quote Originally Posted by Super Sapper View Post
There are several threads on grates. The most common is to use angle iron in the V position as this allows the ash to fill and insulate it. I have unistrut in mine and is the same as when I put it in 12 years ago. I suded to have 304 stainless sheets protecting my insulation but the heat burned it out in less than 2 years so I know my fire is hot. The unistrut is galvanized and so far unaffected by the heat.
I have been using 1.5"x1.5"x3/16" angle iron in the "V V V V V" configuration for the past 4 seasons with no issues. They are easily removable and replaceable if needed but i havent had to.