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VERTICAL VENTING
When vertical single 10-inch (25.4 cm) venting is used (refer to Illus. B below), the ductwork from the dryer to the
outside outlet cannot exceed 40 feet (12.19 meters) (refer to Illus. B below). This calculation compensates for the
use of a maximum of three (3) elbows including the two (2) elbows creating the 180° (turned downward) outside
outlet.
Illus. B
If the length of the ductwork run or quantity of elbows used exceeds the above noted specifications, the cross-
sectional area of the ductwork must be increased in proportion to the number of elbows or duct run added.
IMPORTANT: For extended ductwork runs, the cross-sectional area of the ductwork can only be
increased to an extent. For extended ductwork runs, a professional HVAC firm must
be consulted for proper venting information.
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