5 model

Free

Full Height PCI Bracket with ventilation holes

Printables

Free

PCIe slot cover with 2x USB 2.0 cutouts

Printables

Free

Thermaltake P3 and P5 PCIE Slot 80mm Fan Holder

Thingiverse

Free

3D Printed GPU Rack forDual-Slot Cards (PCIe Riser, 120 mm Fan Mount)

Printables

Free

120 mm Fan Bracket on a PCIe Slot Cover (GPU Backplate Cooling)

Printables