Altamont Capital Partners announced an investment in Key Container Corp., a manufacturer of corrugated packaging products, to help build a scaled corrugated platform and support the company’s continued regional expansion.

Founded in 1959 by Jack Sundel and Richard Strauss, Key Container Corp. manufactures specialty and custom corrugated packaging products for customers across the Northeast. The company is currently led by David Strauss, son of Richard Strauss, who will continue serving as president following the investment. The family-owned business also includes fourth-generation leadership through Matthew Strauss, who serves as sales manager.

Jefferies Financial Group served as financial advisor to Altamont, while TM Capital, a division of Capstone Partners, acted as financial advisor to Key Container.