We provide customers with the highest quality windows available in the market. H-ikkuna endures continuous use year in year out - and all this under constant extreme weather conditions. Few products can take such strain during its life cycle. But we have achieved something unique:

• More than 20 million H-ikkuna Classics sold and installed worldwide
• Only 0,0006 registered complaints for each 1 million hinges made over the last 30 years