Most Raspberry Pi cases are plastic. This has aluminium end pieces and a powder-coated steel base and cover. A neat feature is that during construction one end piece can either cover or expose the MicroSD card slot; when covered the MicroSD card is secure and tamper-proof. This case is ideal to house a Raspberry Pi 4 with PoE hat - see the attached pic. Note that in my installation power is supplied via the ethernet cable from a PoE network switch and boot media is a 120GB USB3 SSD, replacing the MicroSD card.