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2-Ply Aluminum Flex Vent
The minimum vent system for horizontal termination must consist of:
12" (305 mm) horizontal length (measured from center of vent pipe)
Wall thimble part# IMC1082A
Horizontal termination cap part # IMC1070A or IMC1070B
The maximum horizontal vent system consists of:
34' (10363 mm) vertical length with 3 - 90 degree bends and a 20' (6096 mm) horizontal length
(measured to center of 45° vent pipe)
Wall thimble part# IMC1082A
Horizontal termination cap part # IMC1070A or IMC1070B
Note: Horizontal strapping shall be supported, by means of a steel strap, every 3'.
H1
H2
H1
V
H3
H2
H
H1
V
Venting configuration straight out off 45° pipe
Minimum 12" – Maximum 24"
Horizontal/Vertical Venting Sample Chart
H Max V Min H+H1+H2 Max
A
2
B
8
Vertical/Horizontal Venting Sample Chart
V Min H1 + H2 + H3 Max
A
3
B
5
3
5
5
12
5
12
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