This enclosure is made for the following Parts:

• Louder-ESP32 with or without Wifi Antenna (there are 2 backplate versions):
  https://www.tindie.com/products/sonocotta/louder-esp32/ 
• 2 Visaton FR-7:
  https://www.visaton.de/de/produkte/chassis/breitband-systeme/fr-7-4-ohm
• DC Jack e.g.  5.5mm x 2.1mm (8mm mounting hole)
• 4x threaded inserts M2 x 3mm for mounting the ESP32
• 20x threaded inserts M3 x 5mm (can also be a bit bigger or smaller)
• 4x M2 Screws 4mm 
• 4x M3 minimum 12mm for the front
• 16x M3 6-12mm for the rest