Review on 🌬️ Gulrear Portable AC Window Kit: Adjustable Length 20"-55", Fit for Vertical Windows, Sliding Window Vent Kit for Exhaust Hose (5.0"/13cm Diameter) by Eric Power

Technically it works. One problem is that it's not high enough so that the air conditioner exhaust fumes can't get through the hole as they hit the window sill. Also, sliding one part into the other creates a gap that needs to be filled. It's also pretty squishy. The included tape is useless if the glue is bad. That being said, if you go to the hardware store and buy some heavier tape to seal everything, use duct tape or something like that to attach the exhaust pipe to it, it might work just fine.