4090 Single or Dual slot PCIe brackets? Are they available anywhere?

3 x PCIe Slots; Displays Front Design of Graphics Card Show More Customize your This steel three-slot bracket allows you to mount your graphics card

A very simple design that screws into unused PCIe slots on the PC chassis in order to support a GPU and prevent sagging

pcie x32 slot 80-90mm Dual Fan Rack Mount PCI Slot Cover Bracket Video Card Cooling : : Computers & Accessories

pcie slot pinout Akasa AK-HDA-10BK, 2 x SSDHDD to PCIePCI Slot, Mounting Bracket out of 5 stars Read reviews for average rating value is of 5 Read 4 Reviews