Universal Motherboard Standoff Plate, Open Air PC Bench, ATX, ITX

Model is 305mm x 244mm x 1mm and is based off the official ATX, Flex ATX, Micro ATX and ATX standards.
The solid version uses roughly 100g, the skeletonized version uses roughly 50g

Standoffs have no threads, feel free to remix to include them if you'd like.