Libertango - Faceplate Frames

This is part of a [collection](https://www.thingiverse.com/LubosD/collections/libertango) of wall faceplates and frames. The design is intended to be mutually compatible (but not identical) with [ABB Tango](http://www117.abb.com/index.asp?thema=2709).

OpenSCAD sources are available in the [GitHub project](https://github.com/LubosD/libertango).