With these uPVC windows and doors strength, stability, consistency, durability, and security are just the by-products! You do not need to run after the manufacturers to get these features added for your product! Tested for 6000 hours under extreme climatic exposure these products have shown minimum detrimental effect. This means, there was minimum changes in the colour and the strength of the products. These windows and doors are extremely suitable to be installed in the coastal areas, prone to humidity and windy locations with salt depositions on the windows and doors. No question of losing the shine or luster or even distorting due to exposure to extreme wet conditions!