Portable AC Window Kit with 5.1” Exhaust Hose for Sliding Window, Adjustable Air Conditioner Window Vent Kit for Ducting AC Seal Panel for Horizontal&Vertical Window. ❄️【Keep the air fresh&Energy saving】: ac vent kit can be better embedded in the window rails, it can achieve a tightly sealing effect, effectively isolate the hot air, keep your room air cool, and save electricity bills.
eBay