29
22" Section accommodates 2" prefilter and
up to an additional 12" of high efficiency
final filter
28" Section accommodates 2" prefilter and
up to an additional 21" of high efficiency
final filter
44" Section accommodates 2" prefilter and
up to an additional 37" of high efficiency
final filter
Fan Performance
Size 65 and Size 75
39 3/8" Airfoil Fan
CFM
Coil Vel
Total Static Pressure - Inches Of Water
Std.
Size
Size
0.50
1.00
1.25
1.50
1.75
2.00
2.25
2.50
Air
65
75
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
23000
356
—
506
4.32
562
6.06
592
7.04
620
8.01
645
9.00
669
9.99
693
11.01
715
12.04
25500
395
—
550
5.48
597
7.31
625
8.35
653
9.43
678
10.51
702
11.60
724
12.70
746
13.81
28000
434
372
595
6.85
638
8.82
661
9.94
686
11.03
711
12.21
735
13.39
757
14.59
778
15.78
30500
472
405
640
8.44
680
10.59
700
11.68
719
12.80
744
14.10
768
15.39
790
16.68
811
17.97
33000
511
438
685
10.30
724
12.62
742
13.78
760
14.98
777
16.17
801
17.59
823
18.98
844
20.37
35500
550
471
731
12.40
768
14.94
785
16.17
801
17.42
818
18.72
836
20.11
856
21.50
877
23.01
38000
588
504
776
14.77
813
17.55
829
18.86
845
20.20
860
21.54
876
22.94
891
24.36
910
25.87
40500
627
537
822
17.48
858
20.47
873
21.88
888
23.29
903
24.71
917
26.16
930
27.29
943
28.78
43000
666
571
868
20.47
903
23.72
918
25.23
932
26.73
946
28.23
960
29.75
974
31.82
988
33.11
Size 65 and Size 75
39 3/8" Airfoil Fan
CFM
Coil Vel
Total Static Pressure - Inches Of Water
Std.
Size
Size
2.50
3.00
3.50
4.00
4.50
5.00
5.50
6.00
Air
65
75
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
RPM
BHP
23000
356
—
715
12.04
755
14.17
799
16.56
840
18.75
880
21.56
925
23.78
974
26.15
1015
29.01
25500
395
—
746
13.81
781
16.00
824
18.39
863
20.86
901
23.21
947
25.8
990
28.52
1027
32.14
28000
434
372
778
15.78
819
18.28
851
20.77
886
23.45
926
25.89
973
28.61
1011
31.43
1044
34.14
30500
472
405
811
17.97
843
20.56
880
23.52
920
25.83
958
28.75
1003
31.51
1031
34.66
1066
38.18
33000
511
438
844
20.37
878
23.33
920
25.93
949
28.61
989
31.41
1025
35.01
1056
38.43
35500
550
471
877
23.01
910
26.10
947
29.08
986
32.16
1018
33.63
1047
38.71
38000
588
504
910
25.87
951
29.29
978
31.78
1016
34.04
1048
36.18
40500
627
537
943
28.78
984
32.45
1021
36.16
43000
666
571
988
33.11
1029
37.10
Maximum ODP Motor Frame Size for Models 65 and 75 — 324T for Open Drip Proof Motor and 286T for TEFC Motor.
High Efficiency Filter Sections- Dimensions
High Efficiency Filter Section
UNIT
Dimensions - inches
SIZE
A
B
Width
Height
03
0
3 1/2
06
0
1/4
08
0
3
10
3/8
3
12
0
0
14
0
0
18
0
0
20
2 1/4
0
26
1 1/2
0
34
1 1/2
0
41
1 1/2
0
50
0
0
65
0
0
75
0
3 3/8
Notes:
1.
The high efficiency filter housing has flanges on the entering and leaving
air sides that match the Heatcraft Products accessory hole pattern (page 30).
2.
The access doors have gaskets. Access doors are located on both sides
of the filter housing.
3.
Filter housing is manufactured from a minimum of 16 gauge steel.