FTF8 OFFSET ELEVATION CHART (With
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| Number of FTF8 |
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Offset | Height | Offset/Return | Starter |
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(Inches) | (Inches) | Elbow Set | Section | Stabilizer | 12" |
| 18" | 36" | 48" | (mm) | (mm) | ||
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14 |
| 32 | ¹⁄₂ | 1 | 1 | 0 | 0 |
| 0 | 0 | 0 | 356 | 826 |
19 |
| 41 | ¹⁄₄ | 1 | 1 | 0 | 1 |
| 0 | 0 | 0 | 483 | 1048 |
22 |
| 46 | ¹⁄₂ | 1 | 1 | 0 | 0 |
| 1 | 0 | 0 | 559 | 1181 |
24 | ¹⁄₄ | 50 | ¹⁄₄ | 1 | 1 | 0 | 2 |
| 0 | 0 | 0 | 616 | 1276 |
27 | ¹⁄₄ | 55 | ¹⁄₄ | 1 | 1 | 0 | 1 |
| 1 | 0 | 0 | 692 | 1403 |
30 | ¹⁄₄ | 60 | ¹⁄₂ | 1 | 1 | 0 | 0 |
| 2 | 0 | 0 | 768 | 1537 |
31 |
| 62 |
| 1 | 1 | 0 | 0 |
| 0 | 1 | 0 | 787 | 1575 |
32 | ¹⁄₄ | 64 | ¹⁄₄ | 1 | 1 | 0 | 2 |
| 1 | 0 | 0 | 819 | 1632 |
35 | ¹⁄₄ | 69 | ¹⁄₄ | 1 | 1 | 0 | 1 |
| 2 | 0 | 0 | 895 | 1759 |
36 | ¹⁄₄ | 71 |
| 1 | 1 | 0 | 1 |
| 0 | 1 | 0 | 921 | 1803 |
37 |
| 72 | ¹⁄₂ | 1 | 1 | 0 | 0 |
| 0 | 0 | 1 | 940 | 1842 |
38 | ¹⁄₄ | 74 | ¹⁄₂ | 1 | 1 | 0 | 0 |
| 3 | 0 | 0 | 972 | 1892 |
39 | ¹⁄₄ | 76 |
| 1 | 1 | 0 | 0 |
| 1 | 1 | 0 | 997 | 1930 |
41 | ¹⁄₂ | 79 | ³⁄₄ | 1 | 1 | 0 | 2 |
| 0 | 1 | 0 | 1048 | 2026 |
42 | ¹⁄₄ | 81 | ¹⁄₄ | 1 | 1 | 0 | 1 |
| 0 | 0 | 1 | 1073 | 2064 |
44 | ¹⁄₄ | 85 |
| 1 | 1 | 0 | 1 |
| 1 | 1 | 0 | 1124 | 2159 |
45 | ¹⁄₄ | 86 | ¹⁄₂ | 1 | 1 | 0 | 0 |
| 1 | 0 | 1 | 1149 | 2197 |
47 | ¹⁄₄ | 90 |
| 1 | 1 | 0 | 0 |
| 2 | 1 | 0 | 1200 | 2286 |
48 | ¹⁄₄ | 91 | ³⁄₄ | 1 | 1 | 0 | 0 |
| 0 | 2 | 0 | 1226 | 2330 |
49 | ¹⁄₄ | 93 | ³⁄₄ | 1 | 1 | 0 | 2 |
| 1 | 1 | 0 | 1251 | 2381 |
51 | ¹⁄₂ | 97 | ¹⁄₄ | 1 | 1 | 0 | 1 |
| 4 | 0 | 0 | 1308 | 2470 |
53 | ¹⁄₄ | 100 | ¹⁄₂ | 1 | 1 | 0 | 1 |
| 0 | 2 | 0 | 1353 | 2553 |
54 | ¹⁄₄ | 102 |
| 1 | 1 | 0 | 0 |
| 0 | 1 | 1 | 1378 | 2591 |
55 | ¹⁄₂ | 104 | ¹⁄₄ | 1 | 1 | 0 | 0 |
| 3 | 1 | 0 | 1403 | 2648 |
56 | ¹⁄₄ | 105 | ³⁄₄ | 1 | 1 | 0 | 0 |
| 1 | 2 | 0 | 1429 | 2686 |
58 | ¹⁄₄ | 109 | ¹⁄₄ | 1 | 1 | 0 | 2 |
| 0 | 2 | 0 | 1480 | 2775 |
59 | ¹⁄₄ | 111 |
| 1 | 1 | 0 | 1 |
| 0 | 1 | 1 | 1505 | 2819 |
60 | ¹⁄₄ | 112 | ¹⁄₂ | 1 | 1 | 0 | 0 |
| 0 | 0 | 2 | 1530 | 2858 |
61 | ¹⁄₄ | 114 | ¹⁄₂ | 1 | 1 | 1 | 1 |
| 1 | 2 | 0 | 1556 | 2908 |
65 | ³⁄₄ | 122 | ¹⁄₄ | 1 | 1 | 1 | 0 |
| 2 | 2 | 0 | 1670 | 3105 |
66 | ³⁄₄ | 124 |
| 1 | 1 | 1 | 1 |
| 0 | 0 | 2 | 1695 | 3150 |
68 |
| 126 |
| 1 | 1 | 1 | 2 |
| 1 | 2 | 0 | 1727 | 3200 |
69 | ³⁄₄ | 129 |
| 1 | 1 | 1 | 0 |
| 1 | 0 | 2 | 1772 | 3277 |
71 | ³⁄₄ | 132 | ³⁄₄ | 1 | 1 | 1 | 1 |
| 0 | 3 | 0 | 1822 | 3372 |
74 | ³⁄₄ | 138 |
| 1 | 1 | 1 | 0 |
| 1 | 3 | 0 | 1899 | 3505 |
77 |
| 141 | ¹⁄₂ | 1 | 1 | 1 | 2 |
| 0 | 3 | 0 | 1956 | 3594 |
78 | ³⁄₄ | 144 | ³⁄₄ | 1 | 1 | 1 | 0 |
| 0 | 1 | 2 | 2000 | 3677 |
80 |
| 146 | ³⁄₄ | 1 | 1 | 1 | 1 |
| 1 | 3 | 0 | 2032 | 3727 |
83 |
| 152 |
| 1 | 1 | 1 | 0 |
| 2 | 3 | 0 | 2108 | 3861 |
84 | ³⁄₄ | 155 |
| 1 | 1 | 1 | 0 |
| 0 | 0 | 3 | 2153 | 3937 |
89 |
| 162 | ¹⁄₄ | 1 | 1 | 1 | 1 |
| 0 | 4 | 0 | 2261 | 4121 |
89 | ³⁄₄ | 164 |
| 1 | 1 | 1 | 1 |
| 0 | 0 | 3 | 2280 | 4166 |
92 |
| 167 | ¹⁄₂ | 1 | 1 | 1 | 0 |
| 1 | 4 | 0 | 2337 | 4255 |
92 | ³⁄₄ | 169 |
| 1 | 1 | 1 | 0 |
| 1 | 0 | 3 | 2356 | 4293 |
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