Quality and guarantee

Dnd handles are tested and guaranteed products

Each handle undergoes strength and wear tests of its mechanical components, fire resistance and durability tests of its coatings in salt spray to ensure the best performance under any conditions of use.

Dnd is a UNI EN ISO 9001 quality system certified company:


Fire resistance

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 certification

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.

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