The top of a box might be a lid. If there is no lid, there may be flaps.
It is called the top of the box or it might be called the "lid".
It could be called a "runner"
The Plastic box and lid shop
The force required to remove a lid from an airtight box depends on factors like the tightness of the seal, friction between the lid and the box, and any external factors like vacuum pressure or suction. Generally, a sufficient force must be applied to overcome these factors and break the seal for the lid to be removed.
measure the sides of the box
A cardboard file with a lid that opens like a box.
A cardboard file with a lid that opens like a box.
The subject pronoun it will take the place of the subject noun phrase 'the lid of the box': It was left wide open.
Hope
Hope
Under the fuse box lid