Pipe reducer

I designed this to adapt a standard 4inch I.D. dryer hose to fit a much larger fitting that goes on my portable air conditioning unit. The previous hose was 5-1/16inch O.D. and flexible plastic, but had gotten brittle over the years. So I decided to use a flexible aluminum dryer hose instead.

The design is one with a 5mm wall thickness, and if you print it in 20%-30% infill it pretty much becomes solid anyway. So no need to make your slicer work harder than it needs to.

Overall dimensions: 5.12in O.D. x 3.82in O.D. x 3.59in long
For my metric friends:(130mm x 97mm x 91.06mm)