HORIZONTAL VENT FIGURES/TABLES
(continued)
| H1 | H |
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| TABLE H |
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| V Minimum | H Maximum | H+H1 Maximum | ||||
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| feet | (m) | feet | (m) | feet | (m) |
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| *Wall | 1 | (0.305) | 2 | (0.610) | 5 | (1.52) |
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| Firestop/Spacer | 2 | (0.610) | 4 | (1.22) | 10 | (3.1) |
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| (SV4.5HF) | 3 | (0.914) | 6 | (1.86) | 15 | (4.65) |
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| **Ceiling | 4 | (1.22) | 8 | (2.48) | 20 | (6.2) |
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| Firestop/Spacer | ||||||
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| V+H+H1 = 40 feet (12.4 m) Max. | |||||
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| (SV4.5BF) |
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*When using |
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| H = 8 feet (2.48 m) Max. |
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Secure Flex, use |
| *Wall |
| H + H1 = 20 feet (6.2 m) Max. |
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Firestop/Spacer |
| Firestop/Spacer |
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SF4.5HF | V | (SV4.5HF) |
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**When using |
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Secure Flex, use |
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Firestop/Spacer |
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SF4.5BF |
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Square termination (SV4.5HTS) shown. Round Termination (SV4.5HTR) may only be used on
See Table 3 on page 17 as an aid in venting component selection for a particular range of exterior wall thicknesses.
Figure 40 - Rear Vent - TWO 90 DEGREE ELBOWS
| *Wall Firestop/Spacer | |
| (SV4.5HF) | |
| H | |
H1 | V | |
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*When using Secure Flex, | *Wall Firestop/Spacer | |
use Firestop/Spacer | ||
(SV4.5HF) | ||
SF4.5HF | ||
**Note - When using |
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Secure Flex, use | **Ceiling | |
Firestop/Spacer SF4.5BF | Firestop/Spacer | |
| (SV4.5BF) |
TABLE J
V MINIMUM | H + H1 Maximum | ||
feet | (m) | feet | (m) |
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1 | (0.305) | 5 | (1.52) |
2 | (0.610) | 10 | (3.1) |
3 | (0.914) | 15 | (4.65) |
4 | (1.22) | 20 | (6.2) |
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V + H+ H1 = 40 feet (12.4 m) Max. H + H1= 20 feet (6.2 m) Max.
18
Square termination (SV4.5HTS) shown. Round Termination (SV4.5HTR) may also be used.
The Small Square Termination (SV4.5HTSS) may only be used on
See Table 3 on page 17 as an aid in venting component selection for a particular range of exterior wall thicknesses.
Figure 41 - Top Vent - TWO 90 DEGREE ELBOWS
NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
