Fan grill for standard Ultimaker
by egil, published
Based on Sterling's nice design, but truncated so that it fits the fan in the original horizontal mounting position, and without disturbing the Z-axis clearance.
Should print nicely with no cleanup and no support needed. Held down by the two separate M3 screws that holds the fan duct - you may need 20 mm long screws, though. The cover is also 2 mm thinner than Sterling's version - the strength should be the same.
(If you did not make your own fan duct yet, consider doing so, the standard item has a tendency of interfering with your print after a while. The design in http://www.thingiverse.com/thing:25611 is a good example.)