110 Pipe Backdraft Damper
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NAutomatic air backdraft damper for 110 mm diameter ducting with an internal diameter of 103.8 mm.
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- Printables
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- Other House Equipment
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- Creative Commons — Attribution — Noncommercial — Share Alike
Air backdraft damper for 110 mm pipes with an inner diameter of 103.8 mm.
Suitable for inclined pipes or vertical pipes pointing upwards. It is not suitable for strictly horizontal pipes, as the flaps will not close automatically. (A slight inclination of the pipe is enough — you just need to fine-tune the orientation/positioning inside the pipe so both flaps close automatically via gravity.)
Optimized for 3D printing — prints completely without supports.
Assembly Requirements:
1x Base housing
2x Flap doors
4x M3 screws (minimum length of 9.5 mm)
Features:
End-stop limits: The extreme positions of the flaps are mechanical locked so they can never over-rotate into a position where they couldn't return to the closed state on their own.
Manual release pin: Both flaps feature a small pin/nub that allows you to manually free or unstick a flap in case it gets stuck.