GEEETech i3B/C (METAL vers.): Dual FAN - REMIX longer shroud

[update: 06.06.2017]
i recently uploaded a new version using two radial blowers and one axial fan:
https://www.thingiverse.com/thing:2369048

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[UPDATE: 09.01.2017] i had big issues with my design, because the shrouds too low. so they had contact with the prints or had contact with the clamps and that way jammed the printer.
better use this one: http://www.thingiverse.com/thing:2025359

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