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Specifications
Barometric backdraft dampers meeting the following specifications shall be furnished and installed where shown on plans
and/or as described in schedules.
Dampers shall consist of: 16 ga. (1.5mm) insert mount 316 stainless steel hat channel frame with 5 in. (127mm) depth; blades
will be 20 ga. (1mm) 316 stainless steel, eccentrically pivoted;
3
⁄8 in. (9.5mm) square 316 stainless steel axles with 316
stainless steel bearings with acetal races; damper shall be equipped with pressure activated vinyl blade seals; and internal
316 stainless steel blade-to-blade linkage side mounted (out of airstream) with blade mounted 316 stainless steel
counterbalance weights.
Damper manufacturer's printed application and performance data including pressure, velocity and temperature limitations
shall be submitted for approval showing damper suitable for pressures to 2 in. wg (500 Pa), velocities to 2000 fpm (10.2m/s)
and temperatures to 180°F (82ºC). Testing and ratings to be in accordance with AMCA Standard 500D.
Basis of design is Greenheck model SEBR-10 series.
200 300 400 500 600
700
800
900
1000 2000 3000
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1.0
5.2
5.3
.03
2.0
5.5
100
Performance data results from testing a 12 in. x 1 2 in. and 36 in. x 36 in. damper in accordance with AMCA Standard 500D
using Figure 5.3 (fully ducted), 5.2 (ducted exhausting into an open area), and 5.5 (plenum mounted) . All data has been
corrected to represent standard air density at 0.075 lb/ft
3
(1.201 kg/m
3
).
GREENHECK
P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410
PH. 715-359-6171
www.greenheck.com
SEBR-10 SERIESPERFORMANCE DATA
SEBR-10 series
Rev. 1 April 2004
Copyright © 2004 Greenheck Fan Corp.
Damper size
12 in. x 12 in.
200 300 400 500 600
700
800
900
1000 2000 3000
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.9
1.0
5.2
5.3
.03
2.0
5.5
100
Damper size
36 in. x 36 in.
Velocity (fpm)
Pressure Loss ( in. wg)
Velocity (fpm)
Pressure Loss ( in. wg)