Mark Nelson has been appointed national sales manager for Martin Professional Inc.'s fast-growing architectural division, Martin Architectural. Nelson has extensive experience in the lighting industry and joins Martin from Metalumen Manufacturing, a manufacturer of specification-grade fluorescent fixtures, where he was central regional sales manager.

Prior to Metalumen, Nelson was employed with Hubbell Lighting as its national account manager, working with major end user accounts. He also has experience from a position as national sales manager at Paramount Industries, a manufacturer of high-performance lighting equipment for specialized environments.