INSTALLATION INSTRUCTIONS
(continued)
PLAN THE DUCTWORK
2″
21⁄4″
15″
31⁄4″ 
Transition (supplied
31⁄4″ 
with blower/motor)
71⁄2″
10″
31⁄4″
Adjustable
5″ to 8″
131⁄4″ 
Prepare ductwork to vent to outdoors:
•Use the shortest and straightest duct run possible.
•Duct run should not exceed equivalent length of 150 feet. Refer to “Duct Fittings” chart to calculate equivalent length for various duct configurations.
•This downdraft blower system is designed for use with 31⁄4″ x 10″ ductwork. It can be transitioned to 6″ round.
•Ductwork MUST be vented to the outside. Never vent into a crawl space, attic or other enclosed space.
DUCTWORK ARRANGEMENT
Right discharge
Left discharge (as shipped)
The downdraft vent is shipped with the discharge outlet on the left side. It can be changed to the right side to avoid interference in routing the ductwork.
•To change the ductwork to the right side, remove the screws holding the outlet panel to the bottom of the vent.
•Remove and rotate the panel and fasten with screws.
•The blower can be mounted in the cabinet or under the floor. The blower will fit between floor joists on 16″ centers.
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