Installation Instructions

STEP 1 CONTINUED

• Arrange cross-framing in the ceiling to suit the existing

structure. See examples.

– Secure each 2 x 4 block with at least four (4) #10 wood

screws, 3" long (not supplied). Use 8 wood screws total

for the two supports.

• The cross-framing must be accurately aligned to

ensure correct positioning of the hood.

• The cross-framing must be level in all directions.

Check with a spirit level and adjust if necessary.

IMPORTANT: The ceiling structure must be capable of sup-

porting the weight of the hood (approximately 300 pounds)

and any inadvertent user contact loads. The hood support

frame will be supported by the 2 x 4 min. cross-framing.

Ductwork

• Use the shortest and straightest duct route possible. For

satisfactory performance, duct run should not exceed

100-feet equivalent length for any duct conguration.

• Refer to “Duct Fittings” chart to compute the maximum

permissible length for duct runs to the outdoors.

• This vent hood must use 8" round duct. The 8" round

duct can transition to 3-1/4" x 12".

• Install the house ductwork to run horizontally between

ceiling joists or straight up through the roof.

Finish the Ceiling

• Finish the ceiling surface. Be sure to mark location of

the ceiling joists and cross-framing. Check to be sure

the ceiling is level; use shims, if necessary.

*Depending on available space.