Installation - NOTE: Mounting ceiling opening dimensions are 11.39 inches x 10.42 inches.

• Preset your desired CFM (110/160 CFM) and light color with the two toggle switches.
• Ensure Perfect Fit: Adjust the casing of the hole for the optimal fit of your fan. Trace and cut the ceiling with a keyhole saw if the hole is too small. If too big, cut the right size of drywall and use wood and drywall caulk for attachment. The repaired area can be polished with putty later.

Duct -6-inch metal duct (not included) with an anti-backdraft damper for optimal ventilation and air quality.

• Insulating ducts can help prevent condensation when warm air from the bathroom meets cold ducts in the attic. To prevent the insulation from slipping off the pipes, wrap the joint with HVAC tape a few times;
• In heating and ventilation systems, it is common practice to use sheet metal ductwork and fittings or flexible duct ducting, and use duct tape or aluminum tape to ensure an airtight seal and increase efficiency.
• The deep grooves of the flexible pipe can easily bend into the opening and clog the damper. Use semi-rigid pipe, which is made of aluminum and has very shallow corrugations that allow you to bend or stretch it.

Light - If the light or fan is not working, make sure the light and fan cables are connected correctly. This product is only suitable for 120V;

• Note: If you would like to use the night light alone, please use 2 switches to control the light and fan separately.If you can only use one switch, and have trouble when changing between the night light and main light, please turn off from the light mode you need, leave it at least for 5 minutes before the next turn on, so the light will remember the current mode and back again next time.