Firefighters were called at 6:26 p.m. to Grand Haven Custom Molding, 1500 S. Beechtree St., where they found the semi fully involved in fire. A forklift was used to remove the smoldering contents from the semi in order to put out the fire, Boyle said.
A damage estimate and cause was not available.
Grand Haven Township firefighters assisted at the scene.
The incident is still under investigation.