228pcs Personal PC Computer Spacers Standoffs Screws Insulation Gasket,PC Computer Hardware Bolt Set Assortment for Hard Drive Computer Case,Motherboard,Fan,Power,Graphics cards,CD-ROM,DVD-ROMs - Newegg.com
3D Printed 120mm Fan Spacers Fan Mounting Spacers PC Case - Etsy
Fan Spacers (120mm & 140mm) by The3Designer | Download free STL model | Printables.com