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/