HID Card Reader Backplate

This thing is a replacement backplate for the common HID contactless/proximity card readers (iClass, multiClass, youfailedyourClass, etc). I needed it because I purchased a pivClass reader on eBay that didn't come with a backplate.

I recently realized that this backplate apparently only works for the readers that have an integrated keypad. They look like this:

The readers without a keypad apparently have a deeper screw hole. Modification of the OpenSCAD source should be relatively easy. I may update it myself later if I find the need.