Fire resistance certificates
EN 1634-2 ED. 2008
Fire resistance and smoke control tests for door, shutter and openable window assemblies and elements of building hardware.
Dnd products can be used for installations on doors and windows that are UNI EN 1634-2 certified and proved to have the same level of fire resistance.
VIS system 7 mm
Components made of PA6 nylon with uni-directional right or left spring.
Tests for strength and wear of mechanical components. Opening and closing simulation over 200,000 cycles.
Grade 3 Use category: high frequency of use by the public or poor care; high likelihood of misuse.
Grade 7 Durability: high frequency of use 200,000 cycles.
Type B drive, spring loaded locks.