Buck Step down Box

Information
This module is an older version that i've had for almost two years now, and i couldn't really find any model that fit my need. I designed this box for the Step down module to fit my need for upgrading my Ender 3 Pro fans with Noctua fans.

Module
The module itself is 31mm x 60mm
The holes on the module is 26 mm apart on the short side, and 54.5 mm on the long side.

Box
The dimensions of the box is as follows:

Other dimensions: 7 cm x 4 cm x 2.7 cm
Inner dimensions: 6.5 cm x 3.5 cm x 2.4 cm