Rock grates are subject to very high temperatures and will weaken and deteriorate over time.
If grate is very thin, or sags excessively, replace with a new grate sized to your model
Inspect rock grates periodically
Knock off loose rust and scale ...
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If grate is very thin, or sags excessively, replace with a new grate sized to your model
Inspect rock grates periodically
Knock off loose rust and scale ...
More Information