Damper actuator assembly
Damper apparatus including plenum and multiple damper blades
Damper assembly for air plenum system
Damper including a stepper motor
Damper with stationary pitot-static sensing vanes
Demand control ventilation sensor failure
Device for actuating a shutter formed through a front panel...
Device for controlling diffused air
Device for controlling temperature in a room
Device for introducing a low turbulence displacement air flow in
Device for supplying air to and if need be evacuating air from a
Device for the outlet of supply air
Devices controlling and regulating an air flow
Diffuser and ceiling fan combination
Diffuser for central air conditioning system
Diffuser for heating and air conditioning systems
Diffuser with ceiling-penetrating nozzles
Directional vent register
Directional vent register
Discharge outlet opening and closing apparatus of air conditione