Specification Sheet

TW42
TW36
12”
16 3/4”
Two 7” Round Vents & One 10” Round Vent
10” Round
16 3/4”
9”
Two 7” Round Vents & One 10” Round Vent
10” Round

Smooth transition from two 7” round vents into one 10” round vent.
 Reduces CFMs approximately 25%.
 Avoid using elbows if at all possible. If elbows are used, be sure that the first
elbow is 24” from vent opening and at least 24” between it and the next elbow.
Performance will be reduced with each elbow turn.
MODELS VENTING MEASUREMENTS
TW36 = 36” Twin Only
TW42 = 42” - 60” Twin
Convert (2) 7” Round Vents
into (1) 10” Round Vent
Top Single Vent Opening = 10”
Two Twin Vent Openings = 7”
Distance between twin pipes from
center point to center point:
36” = 9”
42”-60” = 12”
3/07
TRANSITION
Two 7” to One 10”