Under the strict specifications of DIN EN 12101-2, NSHEV units have to be tested for their resistance to repeated opening and closing with 11,000 cycles.

Our target: To exceed this value by at least 50%.

The result: After passing the test with flying colours, with well over 20,000 fault-free opening and closing cycles, we freely interrupted the test series at research and test institute ift-Rosenheim. Even though our louvre windows would have certainly withstood many more cycles without failure. To date, no other louvre window has been able to offer durability on this scale.