Steel panels are 14 gauge with a white finish. Stainless steel panels are 14 gauge Type 304 and have a commercial #2B finish which is protected on one side with a plastic film. Aluminum panels are 5052-H32 aluminum alloy .080-inch (2mm) thick and protected on one side with a plastic film. Zinc-plated panels are 14 gauge steel protected on one side with a plastic film. Panel mounting hardware is furnished with all enclosures which accept these panels.