The hot air near the graphics card can accelerate the dispersed by PCI block slice open hole,increase the efficiency of heat dissipation.
Cover up open PCI slots with these standard case vented slot covers
This cover will fit most ATX cases.
Measure:12cm x 2 cm /4.75 inches(L) x 0.79 inches(W)
Color: Black
Material: Stainless steel
Package Included: 5x PCI Slot Cover