40mm fan grill mod rail

This is the new version of my model here: http://www.thingiverse.com/thing:459244.

My printer had trouble printing the fan grill vertically, so I split it into 2 parts, attached via mounting rail. I still need to model up the ultrasonic attachment with the H-rail slot. This model will be used for my future mods as well, including an LED ring for the extruder head, a webcam mount, and a directional cooling fan.