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Damper and actuator sizing
3-V Blades - D2 and D3 Dampers
Honeywell Volume Control Dampers 
feature a 3-V design that’s proven to 
meet higher-level system requirements 
while minimizing flow-through system loss. Blades are fabricated from 
a single thickness of 16-gauge galvanized steel with three horizontal 
structural V-grooves running the length of the blade.
Applications And Operation
Honeywell Volume Control Dampers are designed to control airflow 
volume in medium- to high-pressure and velocity HVAC systems.  
Typical applications include volume control of airflow in zoning, air 
handler unit or economizer applications. Dampers are designed 
to operate with a wide range of Honeywell electric and pneumatic 
actuators. Operating range is from 2000 to 4000 fpm, and 2.5 to 6  
inch wg. Spring return and non-spring return actuators are available 
with a wide range of output torque ratings to deliver the precise  
power needed for your damper application. 
Certified Performance
Honeywell certifies that models D2 and D3 are licensed to bear the 
AMCA Seal. The ratings shown are based on tests and procedures 
performed in accordance with AMCA Publication 511 and comply with 
the requirements of the AMCA Certified Ratings Programs. The AMCA 
Certified Ratings Seal applies to air performance ratings only.
 Durable construction details are the 
cornerstone of Honeywell D1, D2 and D3 
Volume Control Dampers. They feature 
heavy-duty hat channel frames for 
dependable operation inside ductwork. 
And all models have low-profile top and 
bottom frames, creating more free area 
while reducing pressure loss and reducing 
actuator torque. 
The Right Choice
There’s a Honeywell Volume Control Damper that’s just right for your 
application. The D1 airfoil extremely low leakage damper presents a 
lower resistance to airflow typically used in high pressure systems. 
The D2 ultra-low leakage damper keeps leakage to a minimum with 
blade and jamb seals, and is designed for medium- to high-pressure 
and velocity systems. The D3 low leakage damper is ruggedly built for 
applications in medium pressure and velocity systems. 
Blade Design
Airfoil Blades - D1 Dampers
Honeywell Airfoil Volume Control Dampers feature blades constructed  
of double skin galvanized steel. This design presents a lower resistance 
to airflow and has strength that is typically used in high pressure systems.
Material
Frame  
Gauge
Blade  
Seals
Bearings
Axles
Linkage
Material
Flange
S — Standard
O — Optional
Galv
aniz
ed
Stainless
Alumin
um
16
14
12
Vin
yl
Silicone
Synthetic
Bronz
e
Stainless
Steel
Stainless
Steel
Stainless
None
Single
Doub
le
Re
verse
D1 Airfoil Extremely Low Leakage 
Volume Control Damper
S
O
n/a
S
O
O
n/a
S
S
O
O
S
O
S
O
S
O
O
O
D2 Ultra-Low Leakage
Volume Control Damper
S
O
O
S
O
O
S
O
S
O
O
S
O
S
O
S
O
O
O
D3 Low Leakage Volume
Control Damper
S
O
O
S
O
O
n/a n/a
S
O
O
S
O
S
O
S
O
O
O
HVAC performance depends largely upon airflow, and Honeywell Volume Control Dampers are built 
for both improved airflow and heavy-duty use. Honeywell has long been the leading source for airflow 
control, with Volume Control Dampers that meet AMCA-certified Air Performance Standards, the highest 
established standards for commercial control dampers. Designed to minimize leakage, Honeywell 
dampers will give you efficient, trouble-free operation for years to come.
For a copy of the specification sheet the D1 (63-2671) or D2 and D3 (63-2398), visit customer.honeywell.com.
Standard Rectangular Dampers