Previous page To switch between night light and main light, simply turn ON-OFF-ON the wall switch within 2 seconds Next page 1 5 Color LED Selectable 2 Frosted Lampshade 3 1.0 Sone Super Quiet 4 Night Light Mode 5 Keep the Air Fresh & Dry Previous page Next page 1 Installation Size 2 Installation Lines Previous page Next page 1 Perfect for Bathroom 2 More Applications Precautions for Using Consciot 50 CFM Bathroom Fan with Light Compatible Duct - Features a detachable 3-inch metal duct with an anti-backdraft damper for optimal ventilation and air quality.Preset your desired light color with the toggle switch at the back of the light cover.Note: Mounting dimensions are 7.68 inches x 7.36 inches.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.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;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.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.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. How should I adjust if the ceiling hole size doesn't match the fan? (Please double check your room size before purchase) Please aware - the mounting dimentions of our fan are 7.68" x 7.36". If the hole is too small, trace the housing onto the ceiling and then cut with a keyhole saw. If it's too big, patch it with a piece of drywall to fit the fan appropriately. How should I troubleshoot if the light is not working? (Night light mode precautions: please check the section above) Please ensure you're using a non-dimming switch with good contacts. Check that the cables to the light and fan are properly connected, and the wire connecting the lampshade to the housing is well inserted. Please note, the fan only works with 120V. How should I troubleshoot if fan seems louder than it should? Check the damper to ensure it opens and closes properly. Avoid sharp bends in the duct closer than 18 in. to the fan discharge. Use the recommended size ducting (3-inch). Ensure the fan and fan house screws are securely attached in place. How should I troubleshoot if the fan is not effectively clearing the room? Ensure that a door or window is slightly ajar or open to allow airflow. Confirm that the fan is vented with the correct size duct(3-inch). Confirm that the air vent and air intake is not blocked. It is recommended to use rigid or semi-rigid ducting. How to prevent moisture buildup? (If you have any other questions, please let us know and we will help) Please avoid venting through soffit or ridge vents, as hot air drawn back into the attic through them can condense. Using insulated ducting can effectively prevent condensation when hot air from bathroom exhausts encounters cold ducts in the attic.