Guaranteed Quality
Choosing a Kopen entry door means choosing the highest permormance standards in terms of thermal and acoustic insulation for a resistant, quality product, bound to last.
Performance & Certifications
All Kopen entry doors are EC certified conforming to regulations standards UNI EN 14351-1 and gained the following certifications.

THERMAL TRANSMITTANCE
(UNI EN IS012567-2)
Ud from 0,75 to 0,90 W/mq°K

Watertightness
(UNI EN 1027,12208)
Class 9A

Air Permeability
(UNI EN 1026, 12207)
Class 4

Wind Resistance
(UNI EN 12211, 12210)
Class C4

Noise Reduction
(UNI EN ISO140-3, UNI EN ISO R717-1)
36 dB, 42 dB

Endurance to break-in attemps