That looks a lot like a standard 3.5" HDD case as found in many desktop computers with the Raspberry Pis possibly just lying in it? I might very well be wrong,

That looks a lot like a standard 3.5" HDD case as found in many desktop computers with the Raspberry Pis possibly just lying in it? I might very well be wrong, but it looks a lot like e.g. http://www.overclock3d.net/gfx/articles/2014/11/21055622736l.jpg http://www.overclock3d.net/gfx/articles/2014/11/21055622736l... or http://www.scythe-eu.com/uploads/tx_cfamooflow/Gekkou-HDD-Cage-2_03.jpg http://www.scythe-eu.com/uploads/tx_cfamooflow/Gekkou-HDD-Ca... .