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U Tube > 2 Pass Triangular > Group 8

D & R Standard Model "LL" Group 8 Two Pass Tube Side, 1" O.D. Tubes 1 1/4" Tri. 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"

LL68U2

6 5/8

5

10

13

15

18

21

23

26

28

31

36

42

47

LL88U2

8 5/8

11

22

28

33

39

45

51

57

62

68

80

91

103

LL108U2

10 3/4

20

39

49

60

70

81

91

102

112

122

143

164

185

LL128U2

12 3/4

30

56

72

88

104

119

135

151

166

182

213

245

276

LL148U2

14

38

72

92

112

132

152

171

191

211

231

271

311

351

LL168U2

16

51

93

120

147

174

200

227

254

280

307

360

414

467

LL188U2

18

69

126

162

199

235

272

308

344

380

416

488

560

633

LL208U2

20

84

149

193

237

281

325

369

413

457

501

589

677

765

LL228U2

22

106

181

236

292

347

403

458

514

569

625

736

847

958

LL248U2

24

129

218

286

353

421

489

556

624

691

759

894

1029

1164

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 8 Two Pass Tube Side, 1" O.D. Tubes 1 1/4" Tri. 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"

LL268U2

26

155

416

497

578

659

740

821

903

1065

1237

1400

LL288U2

28

185

485

582

679

776

873

970

1067

1260

1454

1648

LL308U2

30

212

553

664

775

886

997

1108

1219

1441

1663

1885

LL328U2

32

242

617

744

871

997

1124

1251

1377

1631

1884

2138

LL348U2

34

280

721

868

1014

1161

1307

1454

1600

1894

2187

2480

LL368U2

36

315

793

958

1123

1288

1452

1617

1782

2112

2442

2772

LL388U2

38

355

874

1060

1246

1432

1617

1803

1989

2361

2733

3105

LL408U2

40

394

964

1171

1377

1583

1790

1996

2202

2615

3027

3440

LL428U2

42

437

1043

1272

1500

1729

1958

2187

2416

2873

3310

3788

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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