This model is created due to not having sufficient space in the front to house additional fans in the fractal design Meshify C. This replaces the plastic shell that houses the front filter. 

To install you bend the clips steel lips on the metal mesh to release with removal of the two logo screws. This does require the use of a cutting tool to remove part of the case if you are to use 140mm fans. 

120mm should work up to a 360mm radiator as standard with push pull and this shell.

No additional hardware are required to install.

p.s ignore print quality, set to high speed which caused stringing and some under extrusion at the joints.