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30 FPI Smooth Bore
28 FPI Smooth Bore
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36 FPI w/Internal Rib
28 FPI w/Internal Rib
26 FPI w/Internal Rib
18 WPI Wave
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30 FPI Low Fin Tubes FineFin® / Smooth Bore
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Results 1  22 of 22
1
Item #
Plain Section Average Diameter
Plain Section Average Wall
Wall Under Fin Average
Wall Under Fin Minimum
Nominal Root Diameter
Fin Section I.D.
Outside Area Ao
Inside Area Ai
304028
.625
in
15.875
mm
.049
in
1.245
mm
.028
in
.711
mm
.025
in
.635
mm
.561
in
14.249
mm
.505
in
12.827
mm
.411
ft²/ft
.125
m²/m
.132
ft²/ft
.040
m²/m
304035
.625
in
15.875
mm
.058
in
1.473
mm
.035
in
.889
mm
.031
in
.787
mm
.561
in
14.249
mm
.491
in
12.471
mm
.411
ft²/ft
.125
m²/m
.129
ft²/ft
.039
m²/m
304042
.625
in
15.875
mm
.065
in
1.651
mm
.042
in
1.067
mm
.037
in
.940
mm
.561
in
14.249
mm
.477
in
12.116
mm
.411
ft²/ft
.125
m²/m
.125
ft²/ft
.038
m²/m
304049
.625
in
15.875
mm
.072
in
1.829
mm
.049
in
1.245
mm
.044
in
1.118
mm
.561
in
14.249
mm
.463
in
11.760
mm
.411
ft²/ft
.125
m²/m
.121
ft²/ft
.037
m²/m
304065
.625
in
15.875
mm
.083
in
2.108
mm
.065
in
1.651
mm
.058
in
1.473
mm
.561
in
14.249
mm
.431
in
10.947
mm
.411
ft²/ft
.125
m²/m
.113
ft²/ft
.034
m²/m
305028
.750
in
19.050
mm
.049
in
1.245
mm
.028
in
.711
mm
.025
in
.635
mm
.686
in
17.424
mm
.630
in
16.002
mm
.500
ft²/ft
.152
m²/m
.165
ft²/ft
.050
m²/m
305035
.750
in
19.050
mm
.058
in
1.473
mm
.035
in
.889
mm
.031
in
.787
mm
.686
in
17.424
mm
.616
in
15.646
mm
.500
ft²/ft
.152
m²/m
.161
ft²/ft
.049
m²/m
305042
.750
in
19.050
mm
.065
in
1.651
mm
.042
in
1.067
mm
.037
in
.940
mm
.686
in
17.424
mm
.602
in
15.291
mm
.500
ft²/ft
.152
m²/m
.158
ft²/ft
.048
m²/m
305049
.750
in
19.050
mm
.072
in
1.829
mm
.049
in
1.245
mm
.044
in
1.118
mm
.686
in
17.424
mm
.588
in
14.935
mm
.500
ft²/ft
.152
m²/m
.154
ft²/ft
.047
m²/m
305065
.750
in
19.050
mm
.083
in
2.108
mm
.065
in
1.651
mm
.058
in
1.473
mm
.686
in
17.424
mm
.556
in
14.122
mm
.500
ft²/ft
.152
m²/m
.146
ft²/ft
.045
m²/m
305083
.750
in
19.050
mm
.109
in
2.769
mm
.083
in
2.108
mm
.074
in
1.880
mm
.686
in
17.424
mm
.520
in
13.208
mm
.500
ft²/ft
.152
m²/m
.136
ft²/ft
.041
m²/m
306028
.875
in
22.225
mm
.049
in
1.245
mm
.028
in
.711
mm
.025
in
.635
mm
.811
in
20.599
mm
.755
in
19.177
mm
.587
ft²/ft
.179
m²/m
.198
ft²/ft
.060
m²/m
306035
.875
in
22.225
mm
.058
in
1.473
mm
.035
in
.889
mm
.031
in
.787
mm
.936
in
20.599
mm
.741
in
18.821
mm
.587
ft²/ft
.179
m²/m
.194
ft²/ft
.059
m²/m
306042
.875
in
22.225
mm
.065
in
1.651
mm
.042
in
1.067
mm
.037
in
.940
mm
.936
in
20.599
mm
.727
in
18.466
mm
.587
ft²/ft
.179
m²/m
.190
ft²/ft
.058
m²/m
306049
.875
in
22.225
mm
.072
in
1.829
mm
.049
in
1.245
mm
.044
in
1.118
mm
.936
in
20.599
mm
.713
in
18.110
mm
.587
ft²/ft
.179
m²/m
.187
ft²/ft
.057
m²/m
306065
.875
in
22.225
mm
.083
in
2.108
mm
.065
in
1.651
mm
.058
in
1.473
mm
.936
in
20.599
mm
.681
in
17.297
mm
.587
ft²/ft
.179
m²/m
.178
ft²/ft
.054
m²/m
306083
.875
in
22.225
mm
.109
in
2.769
mm
.083
in
2.108
mm
.074
in
1.880
mm
.936
in
20.599
mm
.645
in
16.383
mm
.587
ft²/ft
.179
m²/m
.169
ft²/ft
.052
m²/m
307035
1.000
in
25.400
mm
.058
in
1.473
mm
.035
in
.889
mm
.031
in
.787
mm
.936
in
23.774
mm
.866
in
21.996
mm
.671
ft²/ft
.205
m²/m
.227
ft²/ft
.069
m²/m
307042
1.000
in
25.400
mm
.065
in
1.651
mm
.042
in
1.067
mm
.037
in
.940
mm
.936
in
23.774
mm
.852
in
21.641
mm
.671
ft²/ft
.205
m²/m
.223
ft²/ft
.068
m²/m
307049
1.000
in
25.400
mm
.072
in
1.829
mm
.049
in
1.245
mm
.044
in
1.118
mm
.936
in
23.774
mm
.838
in
21.285
mm
.671
ft²/ft
.205
m²/m
.219
ft²/ft
.067
m²/m
307065
1.000
in
25.400
mm
.083
in
2.108
mm
.065
in
1.651
mm
.058
in
1.473
mm
.936
in
23.774
mm
.806
in
20.472
mm
.671
ft²/ft
.205
m²/m
.211
ft²/ft
.064
m²/m
307083
1.000
in
25.400
mm
.109
in
2.769
mm
.083
in
2.108
mm
.074
in
1.880
mm
.936
in
23.774
mm
.770
in
19.558
mm
.671
ft²/ft
.205
m²/m
.202
ft²/ft
.062
m²/m
Results 1  22 of 22
1
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