Using this lint filter is easy. Just take out the old filter from your AEG, Westinghouse, or Electrolux condenser dryer and put this new one in its place. It fits easily, so you won't have any trouble installing it. As for the notice, if your dryer model isn't on the list we provided, don't just buy it right away. Send us your full model number and PNC code first to make sure it's the right filter for you. When it comes to maintenance, you should clean the lint filter after every drying cycle. This will keep your dryer working well and help it last longer. Since this filter comes with a full guarantee, you can use it worry - free. And remember, we've been in the appliance parts business for over 25 years, so you can trust our products.