50mm Vent Duct Adapter for the silencer

It sits very tight in the mod hole so it needs quite a push when attaching, I assume it will loosen up a bit after few times. You can attache 5 cm vent duck with glue or tape.
Sizing:
• square side - 30x40 mm + 1 mm;
• circular side - 45-55 mm duct cavity, 60mm outside diameter. 

I used hole sizing from this model and made adapter for the large exhaust fan, so you can attache 50 mm vent duct for safe abs printing.