What business do the brothers own in the novel, The Two-Family House?

Box Brothers Factory is the name of the company owned by Abe and Mort. The factory is located in one part of New York as the novel opens; but, the brothers buy a new, larger factory on Long Island after they land a large, long term contract. The factories are each typical of facilities of this kind, with loud machinery and offices for the executives, including Abe and Mort.