I needed a way to mount a 100mm ventilation hose to my printer enclosure. The (silent) fan I had on hand was a Noiseblocker Ultra Quiet XL1 (120mm), so I designed this simple and sturdy reduction duct.
Mounting hole distance (center to center): 105mm
Base dimensions: 140x140mm
Height: 53mm
Hole Size: 5mm
The author marked this model as their own original creation.