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U Tube > 2 Pass Square > Group 6

D & R Standard Model "LL" Group 6 Two Pass Tube Side, 3/4" O.D. Tubes 1" Sq. Pitch

Model No.

Shell O.D.
Inches

No. U Tubes

Square Feet Surface for Nominal Bundle Length

4'0"

5'0"

6'0"

7'0"

8'0"

9'0"

10'0"

11'0"

12'0"

14'0"

16'0"`

18'0"

LL66U2

6 5/8

6

9

12

14

16

19

21

23

26

28

33

37

42

LL86U2

8 5/8

16

24

30

36

43

49

55

62

68

74

87

99

112

LL106U2

10 3/4

27

40

51

61

72

82

93

104

114

125

146

167

188

LL126U2

12 3/4

40

58

73

89

105

120

136

152

167

183

215

246

277

LL146U2

14

52

72

93

113

133

154

174

195

215

236

276

317

358

LL166U2

16

74

102

131

159

189

218

245

276

306

335

393

451

506

LL186U2

18

96

128

166

204

241

279

317

354

392

430

506

581

655

LL206U2

20

120

159

206

253

300

347

394

441

488

536

630

724

818

LL226U2

22

147

188

246

303

361

419

476

534

592

650

765

880

996

LL246U2

24

180

223

293

364

435

505

576

647

717

789

929

1071

1212

Model No.

Shell O.D.
Inches

No. U Tubes

4'0"

5'0"

6'0"

7'0"

8'0"

9'0"

10'0"

11'0"

12'0"

14'0"

16'0"`

18'0"

Square Feet Surface for Nominal Bundle Length


D & R Standard Model "LL" Group 6 Two Pass Tube Side, 3/4" O.D. Tubes 1" Sq. Pitch

Model No.

Shell O.D.
Inches

No. U
Tubes

Square Feet Surface for Nominal Bundle Length

5'6"

6'6"

7'6"

8'6"

9'6"

10'6"

11'6"

13'6"

15'6"

17'6"

LL266U2

26

214

430

514

598

682

766

850

934

1102

1270

1438

LL286U2

28

254

500

600

700

799

899

999

1097

1297

1496

1696

LL306U2

30

295

578

694

809

925

1041

1157

1273

1504

1736

1967

LL326U2

32

338

645

778

911

1044

1176

1309

1442

1707

1973

2238

LL346U2

34

386

733

884

1036

1187

1339

1490

1642

1945

2248

2551

LL366U2

36

438

819

989

1159

1329

1499

1669

1839

2179

2519

2859

LL386U2

38

492

892

1085

1278

1472

1665

1858

2051

2438

2826

3213

LL406U2

40

544

977

1191

1404

1618

1831

2045

2258

2686

3113

3540

LL426U2

42

604

1062

1299

1536

1773

2010

2248

2485

2959

3433

3907

Model No.

Shell O.D.
Inches

No. U
Tubes

5'6"

6'6"

7'6"

8'6"

9'6"

10'6"

11'6"

13'6"

15'6"

17'6"

Square Feet Surface for Nominal Bundle Length

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