FreePBX Appliance Hardware

Does anyone know what motherboard they are using in the “FreePBX Phone System 1000?”

I like the form factor, 4 PCIe and 7 NICs but I can’t afford the $6k for hardware.
Any idea who makes the chassis too? I probably won’t get one of those but just curious.

They are a custom chassis we designed with a custom motherboard and riser cards. All custom. That is why it’s so costly.