National Millwork Inc. (NMI) is a division of The Cook & Boardman Group, the nation’s leading distributor of commercial doors, frames & hardware, electronic access control equipment and specialty (Division 10) products.
Doors & Frames
Wood Doors
Wood Doors are a critical part of most commercial buildings. Selecting the right door for a facility will go a long way in achieving the aesthetic, functional, securit...
Hollow Metal Doors
All of our prime painted steel doors are available for commercial, institutional and industrial applications that satisfies requirements of durability, security,...
Hollow Metal Doors & Frames
Our selection of hollow metal doors and frames represent the highest quality and performance standards available. Check out our inventory from the most reputable...
Standard Hollow Metal Frames
Welded Masonry, knock-down drywall and multi-use frames are available from the Cook & Boardman web store in common configurations and door opening sizes to...