ProBuild Holdings, which confirmed last Friday that it was closing 20 of its units across the nation, announced 16 of the locations late Monday. The closures include lumber yards, component facilities, gypsum yards, and millwork facilities in both large and small markets, the Denver-based company said.

"Some of these locations are being consolidated with other locations nearby, while others are being mothballed until the construction industry conditions improve," the prepared statement said. "Those facilities can be restarted quickly once we see a turnaround."

The lists of 16 closures include:

In a regulatory filing Friday, the company said it wants to lower annual expenses by $22 million to $28 million by reducing its payroll of salaried employees. The company is offering a package of severance benefits to persuade workers to leave voluntarily. If the incentives fail to reach the desired cost reduction, USG said it will resort to involuntary layoffs.