The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Previous page Next page Previous page Next page 1 1000lm 5000K 2 1000lm 4000K 3 1000lm 3000K 4 200lm 2200K Clear the Air with the Right Bathroom Fan If you have access to the attic, then you can vent a ceiling mounted exhaust fan through either a gable wall or the roof. Letting the fan exhaust into an open attic will cause moisture buildup on the underside of the roof. Avoid venting through a soffit vent or ridge vent. The warm air will exhaust out the duct and enter back into the attic through the soffit vent or ridge vent. Make sure the bathroom fan you choose is ducted properly.Fans should be vented to the outside, not to the attic or crawlspace. If the duct work isn’t accessible through the attic, vent the fan through an outside wall of the house.NOTE: The Install Size is 8.11 in x 7.48 in. If the original hole is too big, you’ll need to patch the ceiling. Cut a piece of drywall to make the ceiling hole the right size for your fan. Attach the drywall filler to a larger piece of wood; set it in the hole and drive screws through the ceiling into the wood. The patched areas can be repaired with spackling compound later.If the light or the fan do not work, please make sure that the cables to the light and fan are properly connected. And this product only works with 120V.The deep corrugations of flexible ducting can easily flex into the opening and block the damper. Please use semi-rigid ducting, which is made of aluminum and has very shallow corrugations that allow you to flex it or stretch it.An insulated duct will help prevent condensation when the warm air from the bathroom meets the cold duct in the attic. To prevent the insulation from sliding down the duct, wrap the connections a few times with HVAC tape.Take note of the dimensions of the cutout for your existing fan so you can buy one that fits. Check the size of the exhaust port on the fan to make sure it fits your duct work.OREiN Bath Fan will take a few seconds to start up, which is normal. The product with DC Motor have a slow start and slow stop mechanism in order to protect the motor better. Just like a car, it takes time to reach the top speed.That it is common practice in heating and ventilation systems using sheet metal ductwork and fittings or flexible duct work tubing to use duct tape or aluminum tape to ensure air tight seals and improve efficiency. How to adjust the ceiling hole? If the hole is too small, trace the housing onto the ceiling and then cut the ceiling with a keyhole saw. If the hole is too big, you’ll need to patch the ceiling. Cut a piece of drywall to make the ceiling hole the right size for your fan. The fan seems louder than it should. Check damper to ensure it is opening & closing properly; Be sure do not have any sharp bends in duct closer than 18 in. to the fan discharge; Use recommended size ducting to reduce fan noise; Be sure the fan is securely attached to ceiling joists. The fan is not clearing the room. Be sure a door or window is slightly ajar or opened to allow airflow; Be sure the fan is vented with the right size duct; The deep corrugations of flexible ducting may easily flex into the opening and block the damper, please use semi-rigid ducting. How to prevent moisture buildup? Avoid venting through a soffit vent or ridge vent. The warm air will exhaust out the duct and enter back into the attic through it; An insulated duct will help prevent condensation when the warm air from the bathroom meets the cold duct in the attic. There is a 3-4 second delay after the bath fan is turned on. Is it normal? OREiN bath fan has a slow start and slow stop mechanism, which is to better protect the DC motor. Just like a car, it takes time to reach top speed. If the motor starts too fast, the motor will age faster.