Millwork building materials are historically any wood mill-produced building construction interior-finish, exterior-finish, or decorative components. Stock profiled and patterned millwork building components fabricated by milling at a planing mill can usually be installed with minimal alteration. Today, millwork also encompasses items that are made using alternatives to wood, including synthetics, plastics, and wood-adhesive composites.
Millwork building materials include the ready-made carpentry elements usually installed in any building. Many of the specific features of the space are created using different types of architectural millwork: doors, window casings, and cabinets to name just a few. The materials used in millwork items today are most often graded-lumber, code compliant fasteners, various glasses, and other decorative coatings and finishes. Most millwork building materials can be installed with little or no modification as part of the construction process.