Charcoal panels can be used as a surface for drawing with charcoal sticks or pencils. These panels provide a smooth surface that can hold the charcoal material well, often used by artists for sketching or creating detailed drawings.
If you're referring to a component for a charcoal grill or smoker, a 5-inch panel could be part of the structure, possibly used for ventilation or as a heat shield.
Charcoal panels of this size can serve as a sturdy drawing surface for artists using charcoal pencils or sticks.
the art world, 12-inch charcoal panels can provide a medium for artists to create charcoal drawings or sketches.