fan 120mm, vent spacer for 27" window
thingiverse
Create a fan spacer to vent fumes through a 27-inch window opening using Tinkercad. Edit the design online at https://tinkercad.com/things/7ftW6XjjoBY. For optimal performance, print three of these along with four 120mm fans (e.g., http://www.amazon.com/gp/product/B000O8I474/ref=oh_details_o04_s00_i05?ie=UTF8&psc=1). Included hardware, and wiring instructions are available. If fans don't work initially, swap the wires for a successful connection using wire, butt-type connectors or solder, and a 12V DC wall wart power supply.
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