FTF10 OFFSET ELEVATION CHART
| A | B |
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| Number of FTF10 | |||
Offset | Height | Offset/Return | Chimney Sections | |||||
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(Inches) | (Inches) | Elbow Set | Stabilizer | 12" | 18" | 36" | ||
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4 |
| 15 | ³⁄₄ | 1 | 0 | 0 | 0 | 0 |
9 |
| 24 | ¹⁄₂ | 1 | 0 | 1 | 0 | 0 |
12 |
| 29 | ³⁄₄ | 1 | 0 | 0 | 1 | 0 |
14 | ¹⁄₄ | 33 | ¹⁄₂ | 1 | 0 | 2 | 0 | 0 |
17 | ¹⁄₄ | 38 | ¹⁄₂ | 1 | 0 | 1 | 1 | 0 |
20 | ¹⁄₄ | 43 | ³⁄₄ | 1 | 0 | 0 | 2 | 0 |
21 |
| 45 | ¹⁄₄ | 1 | 0 | 0 | 0 | 1 |
22 | ¹⁄₄ | 47 | ¹⁄₂ | 1 | 0 | 2 | 1 | 0 |
25 | ¹⁄₄ | 52 | ¹⁄₂ | 1 | 0 | 1 | 2 | 0 |
26 | ¹⁄₄ | 54 | ¹⁄₄ | 1 | 0 | 1 | 0 | 1 |
28 | ¹⁄₄ | 57 | ³⁄₄ | 1 | 0 | 0 | 3 | 0 |
29 | ¹⁄₄ | 59 | ¹⁄₄ | 1 | 0 | 0 | 1 | 1 |
31 | ¹⁄₄ | 63 |
| 1 | 0 | 2 | 0 | 1 |
32 | ¹⁄₂ | 65 |
| 1 | 0 | 4 | 1 | 0 |
34 | ¹⁄₄ | 68 | ¹⁄₄ | 1 | 0 | 1 | 1 | 1 |
36 | ¹⁄₄ | 71 | ³⁄₄ | 1 | 0 | 3 | 0 | 1 |
37 | ¹⁄₄ | 73 | ¹⁄₄ | 1 | 0 | 0 | 2 | 1 |
38 | ¹⁄₄ | 75 |
| 1 | 0 | 0 | 0 | 2 |
39 | ¹⁄₄ | 77 |
| 1 | 0 | 2 | 1 | 1 |
41 | ¹⁄₂ | 80 | ¹⁄₂ | 1 | 0 | 1 | 4 | 0 |
43 | ¹⁄₄ | 83 | ³⁄₄ | 1 | 0 | 1 | 0 | 2 |
44 | ¹⁄₂ | 85 | ³⁄₄ | 1 | 0 | 3 | 1 | 1 |
45 | ¹⁄₄ | 87 | ¹⁄₂ | 1 | 0 | 0 | 3 | 1 |
46 | ¹⁄₄ | 89 |
| 1 | 0 | 0 | 1 | 2 |
48 | ¹⁄₄ | 91 | ¹⁄₂ | 1 | 0 | 2 | 0 | 2 |
49 | ¹⁄₂ | 94 | ¹⁄₂ | 1 | 0 | 1 | 5 | 0 |
51 | ¹⁄₄ | 97 | ³⁄₄ | 1 | 0 | 1 | 1 | 2 |
54 | ¹⁄₄ | 103 |
| 1 | 0 | 0 | 2 | 2 |
55 | ¹⁄₄ | 104 | ¹⁄₂ | 1 | 0 | 0 | 0 | 3 |
56 | ¹⁄₂ | 106 | ¹⁄₂ | 1 | 0 | 2 | 1 | 2 |
59 | ¹⁄₂ | 111 | ³⁄₄ | 1 | 0 | 1 | 2 | 2 |
61 | ³⁄₄ | 116 |
| 1 | 1 | 1 | 0 | 3 |
64 | ³⁄₄ | 121 | ¹⁄₄ | 1 | 1 | 0 | 1 | 3 |
67 |
| 124 | ³⁄₄ | 1 | 1 | 2 | 0 | 3 |
69 |
| 127 | ³⁄₄ | 1 | 1 | 1 | 3 | 2 |
70 |
| 130 |
| 1 | 1 | 1 | 1 | 3 |
73 |
| 135 | ¹⁄₄ | 1 | 1 | 0 | 2 | 3 |
75 |
| 138 | ³⁄₄ | 1 | 1 | 2 | 1 | 3 |
79 |
| 145 | ¹⁄₂ | 1 | 1 | 1 | 0 | 4 |
80 | ¹⁄₄ | 147 | ¹⁄₂ | 1 | 1 | 3 | 1 | 3 |
82 |
| 150 | ³⁄₄ | 1 | 1 | 0 | 1 | 4 |
87 |
| 159 | ¹⁄₂ | 1 | 1 | 1 | 1 | 4 |
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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Underside Of Chimney
Figure 37
Chimney Section (S)
B |
A
*Part of Offset/Return Package Model
Figure 38
INSTALLING OFFSETS
First, review the Offset Elevation Chart and Figure 38 for reference.
Step 1. Determine the offset distance where chimney is to pass through the first ceiling- dimension “A.” To find this point on your ceil- ing, first determine the center point for a verti- cal chimney following the instructions for ver- tical installation.
Measure height to the ceiling from the top of
Step 2. Proceed by using the Straight Up Instal- lation Instructions for cutting and framing ceil- ing and roof openings.
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