diff --git a/bricksrc/definitions.csv b/bricksrc/definitions.csv
index 7d849cc9..f475d958 100644
--- a/bricksrc/definitions.csv
+++ b/bricksrc/definitions.csv
@@ -89,6 +89,7 @@ https://brickschema.org/schema/Brick#Bypass_Air,"air in a bypass duct, used to r
 https://brickschema.org/schema/Brick#Bypass_Air_Flow_Sensor,Measures the rate of flow of bypass air,
 https://brickschema.org/schema/Brick#Bypass_Air_Humidity_Setpoint,Humidity setpoint for bypass air,
 https://brickschema.org/schema/Brick#Bypass_Command,,
+https://brickschema.org/schema/Brick#Bypass_Damper,A damper designed to divert excess static air pressure from the supply duct to the return duct to maintain system balance and prevent overpressurization.,
 https://brickschema.org/schema/Brick#Bypass_Valve,A type of valve installed in a bypass pipeline,https://www.petropedia.com/definition/5050/bypass-valve
 https://brickschema.org/schema/Brick#Bypass_Water,Water that circumvents a piece of equipment or system,
 https://brickschema.org/schema/Brick#Bypass_Water_Flow_Sensor,Measures the rate of flow of bypass water,
@@ -1046,7 +1047,7 @@ https://brickschema.org/schema/Brick#Temperature_Setpoint,Sets temperature,
 https://brickschema.org/schema/Brick#Temperature_Step_Parameter,,
 https://brickschema.org/schema/Brick#Temperature_Tolerance_Parameter,A parameter determining the difference between upper and lower limits of temperature.,
 https://brickschema.org/schema/Brick#Temporary_Occupancy_Status,"For systems that differentiate between scheduled occupied/unoccupied mode, this indicates if a space is temporarily occupied when it would otherwise be unoccupied",
-https://brickschema.org/schema/Brick#Terminal_Unit,A device that regulates the volumetric flow rate and/or the temperature of the controlled medium.,
+https://brickschema.org/schema/Brick#Terminal_Unit,A device that regulates the volumetric flow rate and/or the temperature of the controlled medium that has no downstream systems.,
 https://brickschema.org/schema/Brick#Thermal_Energy,"Thermal Energy} is the portion of the thermodynamic or internal energy of a system that is responsible for the temperature of the system. From a macroscopic thermodynamic description, the thermal energy of a system is given by its constant volume specific heat capacity C(T), a temperature coefficient also called thermal capacity, at any given absolute temperature (T): (U_{thermal = C(T) \cdot T).",
 https://brickschema.org/schema/Brick#Thermal_Energy_Storage_Tank,"A Thermal Energy Storage (TES) tank is a specialized container for storing thermal energy, enabling more efficient heating and cooling by balancing supply and demand. It helps reduce operational costs and minimizes the need for larger equipment.",
 https://brickschema.org/schema/Brick#Thermal_Energy_Usage_Sensor,A sensor that records the quantity of thermal energy consumed in a given period,
@@ -1160,6 +1161,7 @@ https://brickschema.org/schema/Brick#Zone_Air_Humidity_Setpoint,Humidity setpoin
 https://brickschema.org/schema/Brick#Zone_Air_Temperature_Sensor,A physical or virtual sensor which represents the temperature of an HVAC Zone,
 https://brickschema.org/schema/Brick#Zone_Air_Temperature_Setpoint,Sets temperature of zone air,
 https://brickschema.org/schema/Brick#Zone_CO2_Level_Sensor,A physical or virtual sensor which represents the CO2 level of an HVAC Zone,
+https://brickschema.org/schema/Brick#Zone_Damper,A specialized type of damper that functions as a Terminal Unit within an HVAC system. It opens and closes in response to the specific temperature demands of its designated zone. By regulating airflow, the Zone Damper helps maintain and adjust the temperature of its associated zone and its target air temperature setpoint.,
 https://brickschema.org/schema/Brick#Zone_Standby_Load_Shed_Command,,
 https://brickschema.org/schema/Brick#Zone_Unoccupied_Load_Shed_Command,,
 https://brickschema.org/schema/Brick#feeds,The subject is upstream of the object in the context of some sequential process; some media is passed between them,
diff --git a/bricksrc/equipment.py b/bricksrc/equipment.py
index b3546217..c5b51250 100644
--- a/bricksrc/equipment.py
+++ b/bricksrc/equipment.py
@@ -607,6 +607,11 @@
             "Return_Damper": {"tags": [TAG.Equipment, TAG.Damper, TAG.Return]},
             "Mixed_Damper": {"tags": [TAG.Equipment, TAG.Damper, TAG.Mixed]},
             "Relief_Damper": {"tags": [TAG.Equipment, TAG.Damper, TAG.Relief]},
+            "Zone_Damper": {
+                "tags": [TAG.Equipment, TAG.Damper, TAG.Zone, TAG.Terminal, TAG.Unit],
+                "parents": [BRICK["Terminal_Unit"]]
+            },
+            "Bypass_Damper": {"tags": [TAG.Equipment, TAG.Damper, TAG.Bypass]},
         },
     },
     "Condenser": {"tags": [TAG.Equipment, TAG.Condenser]},