Heat Exchanger (40mm fan)

Parts List

• 2 x 40mm fans (12v preffered)
• 12v power supply
• 4-8 x 3mm diameter screws
• Cardboard + Duct tape
• Hot Glue

Instructions

1. Rotate the model 90 degrees and you won't need supports.
2. Once printed, you should be able to screw the fans onto each side.
3. Hot glue the fan to the heat exchanger for a better seal.
4. Partially open your window, cut the cardboard to plug the gap in your window.
5. Cut a 40mm high notch into the side of the cardboard and slide the heat exchanger in.
6. Attach your fans to your 12v power supply and tape the power supply wire down to the cardboard.
7. Install the assembly in the window gap. Use duct tape to ensure there is a tight seal.