Meshtastic RAK19001 Base Board - RAK13800 Ethernet Module - RAK19018 PoE module Base Plate - Gratury Junction Box, IP67 Waterproof Plastic Enclosure 220×170×110mm (8.6"×6.7"×4.3")

Note: The Ethernet Module PINs didnt land where I expected based on the model, so I used a knife to cut the lower two standoffs. I attempted to replicate this in the .STEP but its not tested and certainly would be below the expected tolerances for the heatsets. It worked well enough for me tho in real life :)

Suggest printing in something higher temperature tolerance like PETG, or ASA/ABS. 

I did 3 walls, 15% gyroid infill and printed at 50% speed overnight ~5hrs (My P1S handled the bridges just fine in PLA at 100% when testing, slower speed may not have been needed but worked for PETG)

The holes are not at any particular spacing but will accept the same heat set inserts I used in the standoffs.

Meshtastic BOM

From RAK 

• WisBlock Meshtastic Starter Kit | The Basic RAK4631 Meshtastic Kit for LoRa
  • Select: RAK19001 Base Board - RAK13800 Ethernet Module - RAK19018 PoE module - 900MHz for US915/AU915/KR920/AS923
• GNSS GPS Location Module u-blox ZOE-M8Q | RAK12500
• iPEX to N-Type Antenna Connector
• Battery Connector Cable/5 pcs battery

From Rokland - Antenna recommended by Meshtastic

• 5.8 dBi N-Male Omni Outdoor Helium 915 MHz Antenna for RAK Miner Hotspots & Meshtastic
• Rokland RokTape- Waterproof Tape - Self Fusing Silicone
• Molicel INR-21700-P42A 4200mAh 45A 3.7V 21700 Cold Weather
• 3 ft. Antenna extension coaxial cable N-Male to N-Female RFC-400
• RAKwireless Ethernet Cable Gland pigtail SKU 920069 (I'd suggest choosing a different one as this is threaded specific for their enclosures and does not have gaskets or a nut for the other side)

From Amazon (I'm sure you can get cheaper stuff from AliExpress or others)

• Junction Box, IP67 Waterproof Plastic Enclosure 220×170×110mm (8.6"×6.7"×4.3")
• Wall Mount Antenna Mast Bracket
• 2 Cell Battery Holder 21700 Dual Battery Holder for Rechargeable Battery
• USB-C bulkhead (for firmware upgrades) 
• ruthex M3 Threaded Inserts VORON - 100 Pieces RX-M3x5x4 Brass Heat Set Insert