Filament Guide

I printed the original (http://www.thingiverse.com/thing:1764285) and quite liked it. But I decided to play with it a bit and made this one.
It's to guide your filament, it helps avoid the filament get stuck somewhere on the back of the printer. It goes on the top rail of the printer (prusa i3 acrylic, not sure about other printers).
Thank you to original designer (papinist) for sharing it!

*V2 file is tighter on the frame than the other one. I found the 1st one to be a bit too loose.