Amazon.com: Bgears Cooling Fan Adapter 140mm-Black Black : Everything Else
Dual Fans Mount Rack Cooling Heatsink PCI Slot Bracket support 90MM/120MM Fan For Graphics Video Car Mount Cooling Fan Bracket|Fans & Cooling| - AliExpress
9cm to 12cm Fan Adapter Acrylic Mounting Kit - modDIY.com
80mm 90mm to 120mm Fan Slot Low Profile Converter Fan Mount Adapter - modDIY.com
92mm to 120mm SHORT Fan Adapter type A Converter mounting PC Modding Mod Custom | eBay
120mm Fan to 90mm Pipe Adaptor by RamjetX | Download free STL model | Printables.com