Raspberry Pi 4 Wall Tray
A 110 x 62 mm vented backplate for a Raspberry Pi 4B / 3B+ with four 5 mm standoffs on the 58 x 49 mm bolt pattern (2.9 mm bores for M2.5 screws), edge stiffening ribs, two keyhole slots that drop over #8 wall screws, an M4 lock hole at the bottom, and a zip-tie bridge for power-cable strain relief. Five long vent slots keep air moving under the board and cut print time.
electronics raspberry-pi wall-mount keyhole