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- Balancing/Regulating Dampers
- Precision/Flow™ Regulators
- Remote Control Bowden Cable System
- Remote Control Power/Balance™ System
- Remote Control Twisting Cable System
- Control & Backdraft Dampers
- Backdraft Dampers
- IRIS Damper
- Rectangular Dampers
- Round Dampers
- Small Motorized Rectangular Dampers
- Small Motorized Round Dampers
- Industrial Dampers
- Blast Dampers
- Industrial Backdraft Dampers
- Rectangular Industrial Dampers
- Round Industrial Dampers
- Life Safety Dampers
- Ceiling Radiation (Fire) Dampers
- Combination Fire/Smoke Dampers
- Dynamic Fire Dampers
- Smoke Dampers
- Static Fire Dampers
- Louvers
- Acoustical Louvers
- Adjustable Louvers
- Blast Louvers
- Brick & Flood Vents
- Combination Louver/Damper
- Dade County Hurricane Louvers
- Equipment Screens
- FEMA 361 Louver/Grille
- Fixed Louvers
- PTAC Grilles
- Wind-Driven Rain / Sand Louvers
- Misc. Products
- Control Damper Act.
- Duct Smoke Detectors
- Life Safety Actuators
- Plenums
- Security Bars & Grilles
- VAV Terminals
Our Products
- Balancing/Regulating Dampers
- Precision/Flow™ Regulators
- Remote Control Bowden Cable System
- Remote Control Power/Balance™ System
- Remote Control Twisting Cable System
- Control & Backdraft Dampers
- Backdraft Dampers
- IRIS Damper
- Rectangular Dampers
- Round Dampers
- Small Motorized Rectangular Dampers
- Small Motorized Round Dampers
- Industrial Dampers
- Blast Dampers
- Industrial Backdraft Dampers
- Rectangular Industrial Dampers
- Round Industrial Dampers
- Life Safety Dampers
- Ceiling Radiation (Fire) Dampers
- Combination Fire/Smoke Dampers
- Dynamic Fire Dampers
- Smoke Dampers
- Static Fire Dampers
- Louvers
- Acoustical Louvers
- Adjustable Louvers
- Blast Louvers
- Brick & Flood Vents
- Combination Louver/Damper
- Dade County Hurricane Louvers
- Equipment Screens
- FEMA 361 Louver/Grille
- Fixed Louvers
- PTAC Grilles
- Wind-Driven Rain / Sand Louvers
- Misc. Products
- Control Damper Act.
- Duct Smoke Detectors
- Life Safety Actuators
- Plenums
- Security Bars & Grilles
- VAV Terminals
Vent Hoods
Gravity, or natural, ventilation is a means of ventilating a building by strategically placing openings in the building exterior in order to take advantage of naturally occurring phenomena.
