Vertical GPU Mounts - How do they work?

Lian Li Vertical GPU Bracket Kit PCI e Black 4 slot vertical gpu mount Universal Vertical graphics card accessories; 4 slots thick capacity; VG4-4 compatible with O11 Vision O11D EVO O11D O11DXL LANCOOL III LANCOOL II 4 slot linear diffuser dimensions Universal 4- Slots Vertical GPU kit MODEL, VG4-4X, VG4-4W COLOR, Black, White BRACKET DIMENSION, 188mm x 120mm x

4 slot diffuser Lian Li Universal 4- Slots Vertical GPU kit Vertical GPU Mount Graphic Card Loop Bracket 90 Degree Right Angle Holder