40mm Fan for G2S Universal Effector

This is an upgraded (40mm) print cooling fan duct for my Universal Effector (spider). [http://www.thingiverse.com/thing:1356159] This one does *not* require support during printing.

Greater air flow, but space is rather tight. It is *possible* this fan may make contact with a "Z" axis diagonal rod when the head is at its most *extreme* left/right rear positions. Should be fine almost all the time, just be aware if you like to push your printer to its limits.

Update: Adjusted to improve cle