These files are for Personal Use Only. If you would like a Commercial License to sell prints made from these designs, please join me on Patreon: https://www.patreon.com/kazitoad
This is a simple cage for a 4020 (40 x 40 x 20 mm) fan, commonly used in 3D printer mods.
It has a hexagonal grill pattern to keep fingers out and look cool at the same time.
Checkout the 4010 version here.
It should be printed outside-down without support.