The unframed sliding window keeps rain, snow, wind, dust and birds away from your balcony without reducing the amount of light you receive. This protection means less time and money spent on maintenance and repair of the interior of the balcony and structures. Balcony covers reduce noise levels by up to 50%, so you can relax and relax at home comfortably. Also, knowing that our retractable glass is safe, you can easily see that it means increased security for those on the lower floors.