Aluminum frame and aluminum door with glass light colors.
Aluminium interior and entrance doors : Aluminum Frame And Aluminum Door With Glass Light Colors.
Quote from Article entitled Aluminium interior and entrance doors:
Aluminum doors with "warm properties" are made of a three-chamber shape. There are requirements of heat-insulting characteristics for them unlike “cold” ones. These doors are set up in areas where heat preservation is required: stained glass, botanical gardens, etc. Warm aluminum doors are most often used as entrance doors in houses, offices and apartments.
The full version of the article can be found here.