Product review (2 stars): It is not the same product that is described and shown in listing
Does not have the blue and yellow lines to tell when ready to change next time. It does not have the cream (white) colored material that is shown in picture. It is all metal, looks like a silver metal Brillo dish scrubby. I'm not even sure it is a NuTone, there was no labeling on package (like in the pic), just a made in USA label. I just didn't want to mess with returning it, waiting for another and paying for the shipping, so we kept it. Can't tell if it is working or not.  The product did fit perfectly. The product itself may be perfectly fine, but the one they show is certainly not the one you get. Fault of seller.