80mm fan for Ramps Case

This is an adapter for use a 80mm fan for the ramps 1.4 case . I use this diameter of fan because are very silent, around 10db
You can download a M3 or M4 version with holes for use with M3x30mm or M4x30mm bolts.
Using this as lid so you don't need screw at case.

* also i include the solidworks 2014 file.*