In 1976, Marshall Air Systems, Inc. organized to design and manufacture air pollution control and ventilation systems for the fast food restaurant industry.

• See also:
• Masterformat 2004
• 23 33 00 - Air Duct Accessories
• 23 34 00 - HVAC Fans
• 23 34 13 - Axial HVAC Fans
• 23 34 16 - Centrifugal HVAC Fans
• 23 34 23 - HVAC Power Ventilators
• 23 34 33 - Air Curtains
• 44 13 00 - Gaseous Air Pollution Control Equipment
• Masterformat 1995
• 15820 - Duct Accessories
• 15830 - Fans