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D2 and D3 Series
D2 series is an ultra-low leakage
control damper which includes
blade and jamb seals. The D3
series is a general purpose damper
intended for applications where low
leakage performance is not
necessary.
SPECIFICATIONS
Size Range
1
Minimum Size
One Blade ......................................... 6 in. wide by 6 in. high
Two Blade .......................................... 6 in. wide by 10 in. high
Maximum Size
Single Section ................................... 48 in. wide by 72 in. high
Multiple Section ................................. unlimited
Temperature Rating ........................... 180 F (82 C) maximum
Standard Construction
2
Blade: ................................................ 16 gauge galvanized steel 3-V
Action: ............................................... Parallel or Opposed
Frame
2
: .............................................. 16 gauge galvanized steel
Hat-channel
Bearings
2
.......................................... Synthetic (Acetal)
Linkage .............................................. Side linkage out of airstream
(concealed in frame)
Axles .................................................. 1/2 in. square plated steel
Jamb Seals
3
...................................... Compression-type Stainless
Steel
Blade Edge Seals
2
............................ Extruded Vinyl
1
Width and height dimensions furnished 1/4 in. undersized - standard
2
See table for customized options
3
D2 Dampers only
FLANGE OPTIONS
Honeywell International, Inc. certifies that the
models D2, and D3 shown herein 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. March 2008.
Performance Data
D2, D3 Pressure and Velocity Limits.
DIMENSIONS DIAGRAM
LEAKAGE RATE
NOTE: D2 and D3 will withstand higher pressures and velocities. Displayed
ratings are conservative to prevent misapplication. Consult Honeywell
if you have an application outside these limitations.
M18986
STANDARD
(NO FLANGE)
ACTUATOR SIDE FOR
INTERNAL MOUNTING
SINGLE
FLANGE
SINGLE
REVERSE
FLANGE
ACTUATOR SIDE FOR
INTERNAL MOUNTING
DOUBLE
FLANGE
Damper Size
in in.
Maximum
System Pressure
Maximum
System Velocity
12 x 12 5.0 in. wg 3000 fpm
24 x 24 5.0 in. wg 3000 fpm
36 x 36 4.0 in. wg 2500 fpm
48 x 48 2.5 in. wg 2000 fpm
H
W
M20587
1.0
.8
.6
.5
.4
.3
.2
6.0
5.0
4.0
3.0
2.0
1
M23317A
2 3 5 6 8 10 20 30 50
60
80
100
AIR LEAKAGE (CFM/FT
2
)
STATIC PRESSURE DIFFERENCE (IN. WG)
40
4 150
D3
D2
Rectangular Volume Control Dampers
D2 and D3 Series
SUBMITTAL SHEETS