Do I need to take off 3 slot brackets in the case for a slot GPU?

Get the best deals on EZDIY-FAB Vertical Graphics Card Bracket PCIE Slot Plate Mount your GPU vertically for improved cooling and aesthetics

The bracket starts from from the top the pci-e opening and from the from the secondary side of the pci-e

pcie x4 in x16 slot Bracket Accessories PCIe Slot Vertical Graphics Card Holder Steel Shockproof Brand, Unbranded Memory Size, NO ChipsetGPU Model, NO Features, NO MPN

pcie gen 4 in gen 3 slot bracket for PC, also called slot bracket or card holders Those are equipped with cut-outs which offer a secure mechanical connection of the IO connectors