I have designed this custom air con window adapter to minimise the amount the window needs to be opened. please check your hose size if you are interested This is a 6 inch / 150mm hose version but I'm happy to make custom sizes if you message me :) When designing I made sure the air flow isn't restricted as the outlet gets extra wide as it narrows down to the end the outlet size is approx 60mm x 300mm meaning your window only needs to be opened approx 60mm :) the part is made from PETG on a 3d printer please dont hesitate to ask any questions :)
This product would be ideal for homeowners who need a larger air conditioner outlet in a tight space, with a slim profile design to fit narrow windows.