kit king - 6 pack replacement filters for bettervent and 8 foot flexible dryer duct combo. indoor dryer vent filter inside lint trap electric box better kit king usa <b>kit king - 6 pack replacement filters for bettervent and 8 foot flexible dryer duct combo.</b> <br><br> includes: 6 - replacement filters for bettervent, 1 - 4 inch x 8 foot flexible dryer duct <br><br> replace filters to improve air flow and improve air quality. captures fine dust lint. <br><br> filter can be cleaned by wiping damp fingers on built up lint to be discarded. they can also be vacuumed to extend their life. <br><br> dryer flexible duct is strong, flexible and very easy to use. great for installing and mounting your in house vents. <br><br> duct is the standard 4 inch diameter and can extend easily to 8 feet. great for laundry rooms, basements, kitchens, garages, bathrooms and more.