Hello All, I hope this helps someone just like myself in the future. My house has all crank out casement windows so trying to vent an AC unit is very hard. All the adapters on amazon are very bad from what I've experienced. I found this on thingiverse, https://www.thingiverse.com/thing:4886690, and I remixed it to fit right into the connectors for the exhaust vents on the Whynter ARC-14S model. They pressure fit so you don't need to tape or do anything to keep them in place, they fit pinned between the window and window frame, but you will want to get some air conditioner foam strips to fill in the open spots on the window.

Hoping you stay cool out there and happy printing