Made this for a coworker that did not have the right adapter for his new lock to fit his deadbolt. I don't have exact dimensions of his lock but he says this size worked perfectly. This is likely the RED adapter listed in the $10 adapter kit. I modeled this off of the blue adapter and gave it a 5.25x3.5 rectangle hole instead. Added the 6x2 hole version as well.

According to the manufacturer's website this should be compatible with:

• August Smart Lock, 3rd Gen
• August Wi-Fi Smart Lock, 4th Gen

I printed this in Siraya Tech Blu. It's been in use for a month now and no apparent wear or damage. I've included STL, STEP, and a PDF drawing for anyone in need to customize this.