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2-Ply Aluminum Flex Vent
The minimum vent system for horizontal termination must consist of:
12" (305 mm) vertical length (measured to center of vent pipe) with a 90 degree bend and a 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 a 4 - 90 degree bends and a 20' (6096 mm) horizontal length (measured to
center of vent pipe)
Wall thimble part# IMC1082A
Horizontal termination cap part # IMC1070A or IMC1070B
Note: Horizontal venting shall be supported, by means of a steel strap, every 3'.
The maximum vertical system consists of:
Up to 34' (10363mm) of vertical length
Fire stop
Flashing
Collar
Adapter from flex to Simpson Dura-Vent part 0926I
Termination cap part # 0991
A maximum of 4 – 90 degree bends can be used on the vertical installation with the flex vent. The maximum
height for this vent configuration is 34' (10363 mm) and the minimum height is 4' (1219 mm), the maximum
horizontal run is a total of 20' (6096mm).When fastening the flex vent to the termination and to the unit use a
minimum of 3 # 8 x ½" hex head sheet metal screws on the 4" vent and a minimum of 4 - # 8 x ½" hex head
sheet metal screws on the 7" vent.
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