West Europe means the regions near to the Atlantic in the west of Europe and neighboring islands, including Britain, Ireland, Holland, Belgium, Luxemburg, France and Monaco. West Europe lies within west wind zone, most of regions belong to oceanic temperate zone broadleaf forest climate, with rich, stable rain and rich fog. Britain is the typical representative of climatic characters in the West European countries. The basic rule of British weather is quick & frequent change.

Friction externally-opening is a kind of opening manner widely applied by British architecture, this kind of opening manner has powerful adaptability for weather with rich rain and fog. The opening angle of friction externally-opening window may near to 90 degrees. Under opening state, one may directly and conveniently wipe the surface of external door & window at indoor location, safe, fast and convenient. Internally-high & externally-low frame structure is applied, wind pressure resistance, dustproof, sand-roof and waterproof performance are improved, this kind of structure is suitable for use in the region with much wind and rain. Different external vertical surface materials, including pure wood and composite wood & aluminum, and color are applicable for requirements on architectural external vertical surface.