Columbia Machine is the world's leading manufacturer of concrete products equipment.

• See also:
• Masterformat 2004
• 11 24 00 - Maintenance Equipment
• 11 24 13 - Floor and Wall Cleaning Equipment
• 11 24 16 - Housekeeping Carts
• 11 24 19 - Vacuum Cleaning Systems
• 11 24 23 - Window Washing Systems
• Masterformat 1995
• 11010 - Maintenance Equipment