Multi-room Coverage The S-290 offers a 110m² active coverage area, allowing you to cool multiple rooms in almost any climate whilst maintaining a low 54dB noise level. Sash Window Kit Included Ideal for sliding doors or sash windows, the included window kit will allow you to neatly fit the hose, so the extracted hot air is efficiently ejected from your home or office. If you don’t have sash or sliding doors, the hose can simply be placed directly through any window.