This is a parametric security camera housing I used for my home security cameras. It's designed to fit over a one of these:

http://www.amazon.com/gp/product/B006IKH2FC/ref=oh_details_o00_s01_i02?ie=UTF8&psc=1

It fits the camera and a POE adaptor like these:

http://www.amazon.com/gp/product/B003CFATQK/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1

It uses 4 M3x16 bolts and matching nuts.

NOTE: THE SIDES AND TOP ARE NOT REVERSIBLE; ONE END EXTENDS PAST THE TABS SO IT IS FLUSH AGAINST THE WALL. You might notice in my closest-up photo that I got the end closest to the camera backwards. OOPS.