Single Gang Outlet Box Extension, parametric

Single gang outlet box extension.  It can be used with long screws, or for deep extension, it can be used with short screws on inside and outside.  I've use PETG, but to match what manufactures use, I've set to ABS.  Use at your own risk, for low voltage work.  We use these when building acoustic wall treatments to extend the outlet ou to the level of the wall treatment.  But these can be use for tile, thick drywall, etc.  CAD files include F360 and Step solid models for editing extension depth as needed.