Metal Panel Wall
A metal panel wall is a wall surface within the metal building envelope system. It is planned together with the openings in the wall, the junctions at its edges, and the steel frame behind it.

Metal panels within the envelope
Metal panels are one element inside the envelope system. They form the wall and roof surfaces, and they are chosen together with the frame, the fixings and the junction details. A panel description on its own does not describe a building, and this site does not present panels as standalone products with published specifications.
If your inquiry concerns panels, describe where each panel type is used, which surface it closes, and what it must join to at its edges. That is the information a manufacturer needs in order to confirm scope, and it is the information this site asks you to prepare before you send an inquiry.
Walls: the visible and the working surface
The wall of an industrial building does two jobs at once. It gives the building its outward appearance, and it closes the interior against weather and dust. Metal wall panels are used where a long, continuous wall surface is needed, and where the wall must be planned together with doors, openings and the steel frame behind it.
When you brief a wall system, describe the wall areas separately from the roof areas, note every opening and junction, and say how the wall meets the ground and the roof edge. Those details matter more than any single panel description, because most wall problems appear at junctions rather than in the middle of a flat run.