Manufacturers of prefabricated sheet metal ducts and fittings.

• See also:
• Masterformat 2004
• 05 58 00 - Formed Metal Fabrications
• 05 58 13 - Column Covers
• 05 58 16 - Formed Metal Enclosures
• 05 58 19 - Heating/Cooling Unit Covers
• 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 37 00 - Air Outlets and Inlets
• 23 37 13 - Diffusers, Registers, and Grilles
• 23 37 23 - HVAC Gravity Ventilators
• 23 51 00 - Breechings, Chimneys, and Stacks
• 23 51 13 - Draft Control Devices
• 23 51 16 - Fabricated Breechings and Accessories
• 23 51 19 - Fabricated Stacks
• 23 51 23 - Gas Vents
• 23 51 33 - Insulated Sectional Chimneys
• Masterformat 1995
• 05580 - Formed Metal Fabrications
• 15550 - Breechings, Chimneys, and Stacks
• 15810 - Ducts
• 15820 - Duct Accessories
• 15850 - Air Outlets and Inlets