Question about Midea Porta Split

It is still recommended to use the included window sealing with this device to reduce outside air entering the room and increase cooling efficiency. The sealing is designed to fit tilt and turn windows and roof windows, attaching with Velcro strips for a good seal around the window sash and frame. This helps keep the gap minimal despite the connection hose, which is particularly flat (2.7 cm) compared to other AC units with thicker tubes. The window must remain open for the hose, but the sealing and included window lock prevent drafts and keep the installation secure without damaging the building. Thus, while the hose is thinner and less intrusive than in some other units, using the window sealing is still necessary and recommended for optimal performance and comfort.