Found 2 3D-models for “power efficient” across many websites

#duct#simple#shroud#EMAX#part#more#alarm#custom#nighthawk#Quadcopter
ThingiverseThingiverse
Customizable Fan Duct System - for Quadcopters.

Customizable Fan Duct System - for Quadcopters.

ThingiverseThingiverse
Arduino power efficient Alarm Clock

Arduino power efficient Alarm Clock

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