This is definitely not OEM Nutone quality. The filter is very flimsy, arrived bent and doesn't have the color change indicator for when it's time to replace it. Further, the filter was flat instead of domed in the middle. The dome is needed to accommodate the fan blades. After modifying it we are able to use it, but I won't be buying this item again when I can get the superior OEM filter for the same or less money.