ELMDOR MANUFACTURING COMPANY was founded on the principles of efficient design and the highest quality production standards. Achieving these goals has established Elmdor as a leader in the marketplace.

STONEMAN , with a tradition of innovation and unique patented product design, backed by 40 years of experience, has historically set quality standards in the industry.

In 1995, Elmdor Manufacturing, which was already a part of the parent company, ACORN ENGINEERING, merged with STONEMAN to create a new division of Acorn Engineering: ELMDOR/STONEMAN.