Makes flexible metal air ducts.

• See also:
• Masterformat 2004
• 21 07 00 - Fire Suppression Systems Insulation
• 21 07 16 - Fire-Suppression Equipment Insulation
• 21 07 19 - Fire-Suppression Piping Insulation
• 22 07 00 - Plumbing Insulation
• 22 07 16 - Plumbing Equipment Insulation
• 22 07 19 - Plumbing Piping Insulation
• 23 07 00 - HVAC Insulation
• 23 07 13 - Duct Insulation
• 23 07 16 - HVAC Equipment Insulation
• 23 07 19 - HVAC Piping Insulation
• 23 30 00 - HVAC AIR DISTRIBUTION
• 23 31 00 - HVAC Ducts and Casings
• 23 31 13 - Metal Ducts
• 23 31 16 - Nonmetal Ducts
• 23 33 00 - Air Duct Accessories
• 23 33 46 - Flexible Ducts
• 23 35 13 - Sawdust Collection Systems
• 23 37 00 - Air Outlets and Inlets
• 23 37 13 - Diffusers, Registers, and Grilles
• 23 37 23 - HVAC Gravity Ventilators
• 23 40 00 - HVAC AIR CLEANING DEVICES
• 23 41 00 - Particulate Air Filtration
• 23 41 33 - High-Efficiency Particulate Filtration
• 23 41 43 - Ultra-Low Penetration Filtration
• 23 43 00 - Electronic Air Cleaners
• 23 50 00 - CENTRAL HEATING EQUIPMENT
• 23 60 00 - CENTRAL COOLING EQUIPMENT
• 23 70 00 - CENTRAL HVAC EQUIPMENT
• 23 80 00 - DECENTRALIZED HVAC EQUIPMENT
• 44 11 16 - Fugitive Dust Barrier Systems
• Masterformat 1995
• 15080 - Mechanical Insulation
• 15700 - Heating, Ventilating, Air Conditioning Equipment
• 15800 - Air Distribution
• 15810 - Ducts
• 15820 - Duct Accessories
• 15850 - Air Outlets and Inlets
• 15860 - Air Cleaning Devices