Representing North America's Leading Manufacturers of Flexible Air Ducts and Air Connectors

• See also:
• Masterformat 2004
• 23 31 00 - HVAC Ducts and Casings
• 23 31 13 - Metal Ducts
• 23 31 16 - Nonmetal Ducts
• 23 33 46 - Flexible Ducts
• 23 50 00 - CENTRAL HEATING EQUIPMENT
• 23 60 00 - CENTRAL COOLING EQUIPMENT
• 23 70 00 - CENTRAL HVAC EQUIPMENT
• 23 80 00 - DECENTRALIZED HVAC EQUIPMENT
• Masterformat 1995
• 15700 - Heating, Ventilating, Air Conditioning Equipment
• 15810 - Ducts