Prusa 25  3 print fan support v2
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Prusa 2.5 / 3 print fan support v2

If you have the older style extruder motor then the fan support provided by Prusa will not fit  This one has been modified for a perfect fit without comming into contact with the motor connecter or cables on the print head ...

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Prusa 2.5 / 3 print fan support v2 alternatives
Kette 2536
jofeinmechaniker