Exterior Doors made of aluminum shapes
Aluminium interior and entrance doors : Exterior Doors Made Of Aluminum Shapes
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.
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