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2. VENTING LAYOUT
a. Single Dryer Venting
When single dryer venting is used, for horizontal or vertical venting the minimum duct size is 12-inches
(30.48 cm) in diameter and the duct work from the dryer to the outside exhaust outlet must not exceed
a distance of 35 feet (10.67 meters) and have no more than two (2) elbows (including both connection to
dryer and outside protection).
IMPORTANT: Exhaust back pressure measured by a manometer at the dryer exhaust duct area must
not exceed 0.3 inches of water (0.74 mb).
CAUTION: IMPROPERLY SIZED or INSTALLED EXHAUST DUCT WORK CAN
CREATE A POTENTIAL FIRE HAZARD.