The DDS wall exhaust fan is designed for general ventilation in heavy duty commercial and industrial applications including factories, warehouses, gymnasiums, underground parking garages, etc. The DDS fan utilizes a steel fan blade for efficient and economical operations and is direct drive, therefore requiring little or no maintenance.
Heavy gauge steel fan panel with deep spun and flared venturi for maximum efficiency.
Heavy gauge welded steel motor supports.
Galvanized, heavy gauge steel blades that are statically and dynamically balanced.
TEFC motors are standard.
Available accessories include: cabinets, sleeves, guards, back draft dampers, control dampers, louvres and weather hoods.
Leader Fan Number
Blade Dia.
RPM
H.P
CFM @ Static Pressure
dBA @ 5 Ft.
Single Phase
Three Phase
0"
1/8"
1/4"
3/8"
1/2"
5/8"
3/4"
DDS12T1025C
DDS12T1033B
DDS12T3025C
DDS12T3033B
12"
1140
1750
1/4
1/3
940
1422
647
1285
325
1062
--
697
--
587
--
419
--
234
53
65
DDS14T1025C
DDS14T1033B
DDS14T3025C
DDS14T3033B
14"
1140
1750
1/4
1/3
1346
2037
1082
1879
624
1705
395
1417
111
1032
--
882
--
733
58
67
DDS16T1025C
DDS16T1033B
DDS16T3025C
DDS16T3033B
16"
1140
1750
1/4
1/3
1981
2992
1660
2841
1064
2607
765
2223
463
1808
133
1521
--
1314
63
72
DDS18T1025C
DDS18T1050B
DDS18T3025C
DDS18T3050B
18"
1140
1750
1/4
1/2
2654
4016
2331
3816
1606
3594
1077
3304
745
2934
449
2173
228
1814
64
74
DDS20T1033C
DDS20T1100B
DDS12T3025C
DDS20T3100B
20"
1140
1750
1/3
1
3561
5389
3210
5162
2734
4926
1774
4674
1350
4350
986
3951
675
3191
69
78
DDS24T1075C
DDS24T1100B
DDS24T1300B
DDS24T3075C
DDS24T3100B
DDS24T3300B
24"
1140
1750
1750
3/4
1
3
6549
6761
9909
6017
6453
9558
5527
6128
9207
4482
5792
8886
3454
5291
8599
2801
4802
8131
2226
4316
7576
73
81
84
DDS30T1500B
DDS30T3150C
DDS30T3500B
30"
1140
1750
1.5
5
11600
17552
10925
17106
10193
16661
9127
16215
7504
15745
6177
15190
5178
14541
79
90
DDS36T3200D
DDS36T3500C
36"
860
1140
2
5
16364
21692
15172
20793
13864
19893
11597
18903
9443
17883
8094
15993
6134
13983
80
88
DDS42T3500D
DDS42T3500C
42"
860
1140
5
5
24499
23209
23193
22619
21957
21962
20490
21019
18660
19925
15890
18829
12704
17519
85
88
DDS48T3750D
DDS48T3750C
48"
860
1140
7.5
7.5
35654
32563
33411
31677
31857
30688
30219
29636
28021
28562
25622
27222
22628
25795
89
92
Fan blades tested in accordance with AMCA standard 210, figure 12.
dBA ratings shown are measured at 0" static pressure, and should be used as guideline only.
