Red/Blue/Black Acrylic Wall Mounted Protective Case Support Cooling Fan for Raspberry Pi 4 Model B $ 0.99 Description: - Wall Mounting Available - Red Blue Black Optional - Support Adding Cooling Fan - Compatible With Raspberry Pi 4B - Make of Transparent Acrylic, could check the board status easily There is a Protective Film on the board surface, please take it off before using. Package Included: 1* Acrylic Case Kit