🔌 CyberPower CRA20001 Rack Blanking Panel Kit Cases, Black: Enhance Efficiency and Aesthetics in your Server Rack Setup Review

Well done. Durable plastic. They have their uses. You can drill a bushing and insert it into the hole to allow the wire to pass through. Something safe to install, easy to remove. can be cheaper as it uses recycled water bottle material.

Very good end cap set for standard 19" rack. They are easy to assemble and hold up well. It takes a little effort to remove, so don't accidentally pop it out.

They are plastic, it was not mentioned anywhere in the description, at least I could find it. That's exactly what I needed. Bring a 19" rack which includes my WiFi router and a Bluetooth audio booster. Ordinary metal connectors would interfere with wireless signals. The end caps are a bit difficult to put on, but at least that means they won't fall out.