BeQuiet! chassis with the top removed. you will notice slots for a variety of fan mountings and a set of plugs to disconnect the wires connected to the top plastic.
Funky Kit Review - Thermaltake Core P6 TG Mid Tower ChassisXPG SPECTRIX D45G DDR4-4400 2x 8 GB @ TechPowerUpHow to Fix a Microscience HH-1060 RLL Hard DriveRadeon TX 6600 Launch DayGeIL Announces the Availability of POLARIS RGB DDR5 Gaming Memory KitsCooler Master Masterliquid ML240 Illusion AIO Cooler ReviewHardware Asylum at Hackfort 2021Hackfort 2021 Wrapup with the Director of HackfortColorful GeForce RTX 3060 Bilibili 12GB @ Guru3DBuilding A Plex Media Server with TerraMaster 10GbE Series