16
ZONE DAMPERS
LOW AND MEDIUM PRESSURE RECTANGULAR DAMPER DIMENSIONS
HEAVY DUTY RECTANGULAR DAMPER DIMENSIONS
Part Number STCD W x H
Sizes available from 8” x 8” up to 48” x 48”
DEPTH
B
16"
A
WIDTH HEIGHT
16
B
MOTOR
48" MAXIMUM WIDTH
A
Rectangular heavy duty dampers should operate at 1500 FPM.
E.G. A 24" x 12" damper = 2 square feet.
2 square feet X 1500FPM = 3000 CFM.
4"
200
280
390
490
700
1090
1500
2000
2500
3000
3600
4000
630
960
1400
1850
2250
2300
3080
570
900
1220
1600
2000
2450
2850
500
770
1100
1400
1750
2100
2500
440
680
950
1200
1500
1800
2100
390
590
800
1000
1250
1500
1750
310
490
650
850
1000
1200
1400
250
390
510
650
6
8
10
12
14
16
18
20
8
10
12
14
16
18
20
22
24
HEIGHT IN INCHES
WIDTH IN INCHES
2-1/2"
5"
H
W
2-1/4"
Part Number TREC W x H and STMRTD W x H
Sizes available from 8” x 6” up to 24” x 20”.
RECTANGULAR DAMPER CAPACITIES*
Dampers listed below are standard sizes. For larger sizes and capacities, contact the factory.
ZONE DAMPERS
Motors on low and medium pressure dampers will be mounted on the Height (H) side.
Bottom mount motors will be located on the
Width (W) side.
* These air quantities were derived from a duct sizing chart .1” friction loss per 100’ of duct. All CFMs listed are
approximate. For accurate selection use duct sizing table or device.
