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Balancing/Regulating Dampers
Precision/Flow™ Regulators
Remote Control Bowden Cable
Remote Control Power/Balance™
Remote Control Twisting Cable
Control & Backdraft Dampers
Backdraft Dampers
IRIS Damper
Rectangular Dampers
Round Dampers
Small Motorized Rectangular Dampers
Small Motorized Round Dampers
Doors
Access Doors
Plenum Access Doors
Drop Plenum Diffusers
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
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Brick 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
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Conventional Curbs
Conventional Rails
Curb Adapters
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Metal Building Rails
Sunshades
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Vent Hoods
Wall Intake Hoods

Our Products

Balancing/Regulating Dampers
Precision/Flow™ Regulators
Remote Control Bowden Cable
Remote Control Power/Balance™
Remote Control Twisting Cable
Control & Backdraft Dampers
Backdraft Dampers
IRIS Damper
Rectangular Dampers
Round Dampers
Small Motorized Rectangular Dampers
Small Motorized Round Dampers
Doors
Access Doors
Plenum Access Doors
Drop Plenum Diffusers
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 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
Penthouses
Roof Curbs and Rails
Conventional Curbs
Conventional Rails
Curb Adapters
Metal Building Curbs
Metal Building Rails
Sunshades
Vent Hoods
Vent Hoods
Wall Intake Hoods

Drop Plenum Diffusers

Drop Box Diffusers provide single point air distribution system with the added benefit of allowing directional airflow.

Not sure what you need? Check out our Selection Tool!
6-Way Drop Diffuser/Plenum
DPD-6
6-Way Drop Diffuser/Plenum
Angled Face Drop Diffuser/Plenum
AFPD
Angled Face Drop Diffuser/Plenum
Concentric-Supply/Return Units
CO
Concentric-Supply/Return Units
Concentric-Supply/Return Units with Lined Plenum
CO-FM
Concentric-Supply/Return Units with Lined Plenum
Drum Louver Drop Diffuser/Plenums
DPD
Drum Louver Drop Diffuser/Plenums
Flat Face Drop Diffuser/Plenum
FFPD
Flat Face Drop Diffuser/Plenum
Low Profile Drop Diffuser/Plenum
LPD
Low Profile Drop Diffuser/Plenum