This is a CNC aluminum alloy shell, specially designed for Raspberry Pi 4 which is ultra-thin and portable because it is only 16 mm thick.
Black acrylic translucent plate can maximize compatibility with WiFi and Bluetooth signals.

Access to all ports of Raspberry Pi 4 Model B computer, perfect support 40 pin GPIO Ribbon cable.
Moreover, a 5 mm thick rotating radiator at the bottom to enhance the heat dissipation of the case and protect the Raspberry Pi 4B from overheating.

Specifications

• Material: Aluminum alloy
• Color: Black
• Compatible with: Raspberry Pi 4 Model B
• Dimension: 92mm X 62mm X 14mm
• Weight: 104g approx

Packing List

• Alloy body case x2
• Thick Si thermal tape x1
• Thin Si thermal tape x1
• Acrylic side panel x1
• Logo sticker x2
• Rubber feet x4
• Copper standoff x4
• Black screw x4
• Spanner x1

Note! The Raspberry Pi single-board computer shown in the pictures is not included.

Installation instructions can be found on the supplier's page - here briefly (without images) from the supplier

Step 1: Place the piece of thicker heat-conductive material underneath and cut two pieces from the thinner one to put on top.

Step 2: Secure the Raspberry Pi using the screw standoffs, put the plastic side panel in place (aligned with the USB connectors)

Step 3: Fasten the top cover with screws and place the rubber feet underneath. Attach the logo sticker.