Headquartered in Arlington, Vt., Mack operates 10 locations throughout the eastern United States and Scotland, as well as five demand/pull managed inventory locations on the West Coast and in Europe. Mack has over 1800 employees.

A family-run business, Mack has earned a 5A1 D&B rating, the highest available. The corporation has no long-term debt, and finances its own acquisitions and growth. With sales of over $400 million, Mack is ranked the largest non-automotive molder in the country.

Mack primarily serves the server/mass storage, business equipment,medical, telecommunications, industrial and consumer products markets. Key customers include Bose, C&D Technologies, Canon, Compaq, EMC, Graco, Healthdyne, Hewlett Packard, IBM, Lego, Lucent Technologies, Motorola, NEC, Nortel Networks, Pitney Bowes, Storage Technology, Sun Microsystems, Xerox and Yuasa.