Heavy blackened steel?
Cast iron?
Thin wire?
A heavy-duty rack suggests it was designed to hold substantial weight or withstand high temperatures.
Examine the edges
Does it have bent-up edges?
Are there rails along the sides?
Does it have hooks or tabs?
Are there grooves or notches?
Those little details can be more informative than the overall size.
Look for mounting hardware
This is a particularly important clue.
If the rack has unusual brackets, sliding rails, clips, or mounting points, it may have been designed to fit into a specific
