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U Tube >
2 Pass Triangular > Group 6
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D & R Standard Model "LL"
Group 6 Two Pass Tube Side, 3/4" O.D.
Tubes 15/16" Tri. Pitch
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Model No.
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Shell O.D.
Inches
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No. U Tubes
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Square Feet Surface for Nominal
Bundle Length
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4'0"
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5'0"
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6'0"
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7'0"
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8'0"
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9'0"
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10'0"
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11'0"
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12'0"
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14'0"
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16'0"`
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18'0"
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LL66U2
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6 5/8
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11
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17
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21
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25
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30
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34
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38
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43
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47
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51
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60
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68
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77
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LL86U2
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8 5/8
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20
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29
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37
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45
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53
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61
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69
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76
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84
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92
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108
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123
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139
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LL106U2
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10 3/4
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36
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52
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66
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80
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94
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109
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123
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137
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151
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166
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194
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223
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251
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LL126U2
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12 3/4
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54
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78
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99
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120
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141
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163
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184
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205
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226
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247
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290
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332
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374
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LL146U2
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14
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69
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98
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125
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152
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179
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206
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233
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260
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288
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315
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369
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423
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477
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 |
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LL166U2
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16
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93
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128
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164
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200
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236
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272
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308
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344
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380
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416
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488
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560
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632
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LL186U2
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18
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125
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167
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215
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264
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314
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363
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412
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461
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510
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559
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657
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755
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853
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LL206U2
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20
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157
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203
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264
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326
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397
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459
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521
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582
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644
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705
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829
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952
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1075
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LL226U2
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22
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193
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247
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323
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399
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475
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551
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627
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703
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779
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855
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1007
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1152
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1311
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LL246U2
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24
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234
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294
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386
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478
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570
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662
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754
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846
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938
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1030
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1214
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1398
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1582
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Model No.
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Shell O.D.
Inches
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No. U Tubes
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4'0"
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5'0"
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6'0"
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7'0"
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8'0"
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9'0"
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10'0"
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11'0"
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12'0"
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14'0"
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16'0"`
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18'0"
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Square Feet Surface for Nominal
Bundle Length
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D & R Standard Model "LL"
Group 6 Two Pass Tube Side, 3/4"
O.D. Tubes 15/16" Tri. Pitch
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Model No.
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Shell O.D.
Inches
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No. U Tubes
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Square Feet Surface for Nominal
Bundle Length
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5'6"
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6'6"
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7'6"
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8'6"
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9'6"
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10'6"
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11'6"
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13'6"
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15'6"
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17'6"
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LL266U2
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26
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282
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586
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696
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806
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917
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1028
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1139
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1249
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1471
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1692
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1913
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LL286U2
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28
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331
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659
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781
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903
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1025
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1147
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1269
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1381
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1625
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1868
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2112
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LL306U2
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30
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386
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755
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906
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1057
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1208
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1359
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1510
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1661
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1963
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2265
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2567
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LL326U2
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32
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443
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848
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1022
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1196
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1370
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1544
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1718
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1892
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2240
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2588
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2936
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LL346U2
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34
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503
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956
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1154
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1352
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1550
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1748
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1946
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2144
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2540
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2936
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3332
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LL366U2
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36
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572
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1062
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1287
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1512
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1737
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1962
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2187
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2414
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2862
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3312
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3762
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LL386U2
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38
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643
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1168
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1420
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1672
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1924
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2176
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2428
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2680
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3184
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3688
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4192
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LL406U2
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40
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717
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1293
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1574
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1855
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2136
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2417
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2698
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2979
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3541
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4103
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4665
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LL426U2
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42
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792
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1418
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1729
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2040
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2351
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2662
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2973
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3284
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3906
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4528
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5150
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Model No.
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Shell O.D.
Inches
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No. U Tubes
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5'6"
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6'6"
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7'6"
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8'6"
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9'6"
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10'6"
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11'6"
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13'6"
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15'6"
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17'6"
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Square Feet Surface for Nominal
Bundle Length
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