Louvers :- Combines the functionality of an efficient sun protection panel with the elegant appearance and aesthetic design of a high-quality modern concept. The frame ensures its stability. Being the inventor company of UPVC . Kommerling sticks to its quality and is dedicatedly doing upvc doors and Windows.Louver can be open and closed as required manually.Maintenance free system.Air and light can be controlled for 80% to zero.Suitable for Bedroom windows and Bathroom windows.Very comfortable in winter season, when desired % of opening we can get.