“Altest” Ltd. started first with the development and establishement on the market in its 4-chamber PVC system “Prelude”. Had already proven its qualities, the system becomes one of the most popular solutions for construction companies and contractors for residential buildings and buildings, offices, kindergartens, schools and hospitals.

Windows made with KMG Profile Series “Prelude”, can reduce energy loss in the room to 37%, making it ideal for any developer or user. Тhe tests for the coefficient of heat transfer, that were made in the independent laboratory of the institute ift Rosenheim, Germany once again confirmed the high thermal insulation properties of the 4-chamber PVC profile “Altest” Ltd., namely:

All Series PVC profiles offered by “Altest” Ltd. are resistant to wind, rain, dust, environmental changes. Our PVC profiles are corrosion resistant in highly humid environments, they do not deform after heat treatment, and they are resistant to acids, alkalis and salts.

Another important advantage of the quality of the KMG profiles is their resistance to UV-rays.
By choosing 4-chamber PVC profiles from the series “Prelude”, you get an established and proven over the years quality system.

Watertightness Class 5A 
Wind resistance Class C1
Load capacity of protective devices Class 4
Weighted sound reduction index 33 dB
Thermal transmittance U = 1,36 W/(m2.K)
Air Permeability Class 2
7015
1013
1015
5010
5023
5024
6003
6005
6009
6021
7005
7006
9010
7016
7022
7024
7030
7035
7037
7038
7040
8014
9005
9006
9007
1019
5010
6009
7012
7016
7030
7039
7042
8017
9016
Golden Oak
Light Oak
Nussbaum
Pear Tree
Pine
Red Cherry
Walnut
Wenge
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