What is the size of the painting door on the construction site?

Specific size requirements are as follows:

1. The color of the door body should be the standard color of the enterprise, so as to visually identify the enterprise owned by the project department.

2. The door leaf is a sealed door with rollers at the bottom, which can be made into a horizontal door or a sliding door. The height of the upper frame of the door leaf is 2000 mm, and the clear distance between columns is 4000 ~ 6000 mm. It is not allowed to open the door on the door leaf. Doors (width 900 mm× height 2000 mm) are set on the outside of the doorpost, and six cards and one painting are set on one side of the doorpost.