WTH is that you may ask. It's an external radiator/fan/pump enclosure for three MCR320 radiators and up to 18 120mmx 38mm fans. http://www.youtube.com/watch?v=oFnzBfu1p1c There's a vid that might make it's intended purpose a bit clearer. Intake or front as I think of it. Side exhaust vents Birch ply and Anigris hardwood moldings. No screws. No nails. Furniture grade.