National standard door size and opening direction research
The national standard door generally has four specifications, the height is 2050mm and 1970mm two heights, and the width is 860mm and 960mm. After combination, it can be: 2050*860, 2050*960, 1970*860, 1970*950, height 2050mm The door frame with a total height of 2.05 meters can be purchased at a height of 2050mm if the height of the door opening is 2070mm. It is necessary to leave a margin of about 20mm, which is easy to adjust during installation. The door is divided into two types: outer opening and inner opening, but the direction of the door is identified outdoors. The direction is divided into: outer left open, outer right open, inner left open, inner right open. The resolution is based on the hinge (hinge), and the left is taken as an example: the person faces the door opening outdoors, the hinge (hinge) is the left left side on the left hand side, and so on.
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