Customizable Window Retaining Latches for Exterior Panels

Customizable OpenSCAD Window Latches for Mounting an Exterior AC Panel

I made these because I bought a Midea PortaSplit mobile air conditioner. It has an outdoor unit connected to the indoor unit by a hose. Midea sells a sealing system for the window opening, but I very much doubt that it would survive a thunderstorm.

The OpenSCAD file was created with the help of ChatGPT. I described the requirements, added new ones as needed, and adjusted the parameters until I was satisfied with the design. It was much faster that way :)

The OpenSCAD file includes about 15 parameters, which should make it adaptable to many different window types. For my own installation, I created both a flat version and a version with a hook.

Printing instructions:

• Use a plastic that can withstand heat and mechanical stress. I used PCTG, which offers good mechanical and chemical resistance while remaining easy to print. It behaves similarly to PETG but should be printed at a higher temperature and like PETG much slower than PLA.

• Use 25–30% infill.

• Print the part flat with supports enabled.

In addition to these clamps, you will need a handle and a way to seal the opening around the hose, for example one of the following solutions (the first one is mine)