How does the author use imagery in the book, Unwise Child?

Example of Imagery:

"And he’d go to his wall ladder, push it along that narrow hallway, moving boxes aside as he went, and stop somewhere along the wall. Then he’d scramble up the ladder, pull out a bin, fumble around in it, and come out with the article in question. He’d blow the dust off it, polish it with a rag, scramble down the ladder..."