Triple 50mm Fan Mount

Newb here, please be nice ;) I quickly designed this in TinkerCad so that I could mount (3) 50mm fans directly in front of my build area to help when printing anything with a lot of overhangs/bridging. Any 3 standard 50mm fans should pressure fit perfectly if your printer is true. I mount this to my other design made for my Flashforge Dreamer/Dremel Idea Builder: http://www.thingiverse.com/thing:1051672

Enjoy!

Update: New STL uploaded due the lip being a couple mm thicker on one side than