Living spaces are as diverse as their residents. This makes metallic surfaces in general and polished nickel-plated, polished brass-plated and rose gold surfaces in particular extremely popular in living areas, as they have a refined and timeless look. When combined with steel and stainless steel doors, they give any door system an extraordinary and exclusive charm. High-quality materials and alloys of this type also form the basis for durable and smooth operation combined with a flawless appearance.