E3D V5  V6 SINGLE  DUAL fan duct holder Prusa I3 VER 20
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E3D V5 & V6 SINGLE & DUAL fan duct holder (Prusa I3) VER 2.0

Design based here for E3Dv5v640mmDuctstl and E3Dv5v640mmDuctMirroredstl and here ...

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E3D V5 & V6 SINGLE & DUAL fan duct holder (Prusa I3) VER 2.0 alternatives