this is a free tool that can be a good time saver for your modeling workflow
for installation go to 3dsmax menu > Scripting> Install Max Creation Graph (.mcg) Package > select MGH louver generator_v0.0.325.mcg file then "MGH louver generator" will be available in your modifier list
try to use the last version of program (native version: 2022)
some limitations:
- don't use on solid object
- don't use on non-flattened surfaces
- show bugs if your mesh has multiple mesh elements (detach and apply separately)
- use with minimum possible polygons