How high is the ceiling?

The first-class ceiling and the second-class ceiling are two common forms of ceiling, so how should their heights be set?

Height of first-class suspended ceiling

The first-class ceiling refers to the ceiling with only two planes and only one level, which is generally 50 mm from the top 120- 150mm, and the ceiling edge is 5CM thick. The thickness of the lamp trough is 6 cm.

Secondary ceiling height

The secondary ceiling refers to the secondary ceiling, which is slightly more complicated than the primary ceiling. The more floors, the larger the size of the ceiling. The height of the secondary ceiling is generally reduced by 20cm, and the height of the ceiling depends on the specific height.