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Installation (for qualified installers only) 13
Travis Industries 100-01135 4040809
Vertical Terminations with Two or Three 90° Elbows
• The termination must fall within the shaded area shown in the chart. Use the indicated restrictor
position.
5 feet
10 feet
(min.)
15 feet
20 feet
25 feet
30 feet
0 feet
38' (max)
5 feet
10 feet
15 feet
0 feet
5 feet
10 feet
15 feet
25'(max)
15 feet
20 feet
25 feet
30 feet
0 feet
0 feet
NOTE:
Horizontal sections require a
1/4" rise every 12" of travel.
10 feet
(min.)
38' (max)
25'(max)
Restrictor
Position # 7
NOTE:
Restrictor positions
are based upon lab
tests. The ideal
restrictor position
may vary slightly,
especially when the
termination is near a
demarkation line.
5 feet
Restrictor
Position # 1
35 feet 35 feet
20 feet
20 feet
NOTE:
• Horizontal sections require a 1/4" rise
every 12" of travel.
• The maximum vertical height is 38'.
• The maximum horizontal length is 25'.
• One horizontal elbow is allowed. The
horizontal vent length is calculated by
adding the length before and after the
elbow (H1 + H2 = horizontal vent length).
H1
H2
This is considered a horizontal
elbow (it does not matter
whether it turns right or left).
It may be a 45° or 90° elbow.
This is considered a
vertical elbow
Horizontal length is calculated by adding
both lengths of horizontal run
(Horizontal Length = H1 + H2).
H1
H2
This is considered a
vertical elbow