70 mm to 5 Inch Adapter

Update: The place where the hose went was too short. I redid this with a back plate and a front plate. I am using some styrofoam in-between the window vent and the plates to give insulation. The hole has also been centered now.

I had an AC Window Vent with a 5 inch hole and the hose we had was 70mm. I designed this so it can be glued into the vent and give a place to hook the hose up to with a hose clamp.