Unfinished aluminum blank/blind panel.

• Lasercut
• 3.2mm oval mounting slots
• Unfinished 5052H32 aluminum alloy
• .08inch/2mm thick
  > “Often referred to as “Anodize Quality Aluminum”, as it has excellent finishing qualities and anodized coatings are bright and clear.”
  > Excellent workability with DIY tools (hand drill, drill press, dremel, files, etc.)

http://syinsi.com/product/blank-panels/