Custom Door Components™, a division of Marshfield DoorSystems, Inc.®, is one of the leading manufacturers of door core in North America. Our international sales office and manufacturing facility is located in Marshfield - the heart of central Wisconsin.

As a worldclass producer of particleboard and mineral core, we are committed to producing a superior product through a strict quality control process. As a member of the Composite Panel Association (CPA) and certified by Scientific Certification Systems (SCS), we are dedicated to safely producing a quality product while meeting all environmental codes.