The Vitrocsa system is precision engineered and manufactured in the USA and has been thoroughly tested to AAMA and WDMA standards. The system is also fully NAFS compliant and is also tested and certified to NFRC performance standards. Originally engineered to endure the tough climate conditions of the Swiss Alps, the Vitrocsa system focuses on simplicity, reliability, and quality, allowing it to withstand the harshest climates with minimal maintenance. Vitrocsa USA is the exclusive manufacturer and distributor of the Vitrocsa Invisible Wall system in the United States, Canada, Mexico, and the Caribbean/Bahamas/Bermuda Islands. Proven and tested since 1992, Vitrocsa has installed over 30,000 units in over 30 countries around the world.Available as sliding windows & doors, vertically sliding (guillotine) windows & doors, and pivoting doors, Vitrocsa offers a unique selection of proven and tested solutions to meet any specific project demands. Available as sliding windows & doors, vertically sliding (guillotine) windows & doors, pivoting doors, and casement/awning windows, Vitrocsa offers a unique selection of proven and tested solutions to meet any specific project demands.