Keep your cooling towers, chiller and condensers clean longer with Permatron cotton screens. Reducing the frequency of cleaning coils and keeping your coils operating at a more efficient level. Cotton screens keep large debris from sucking into your cooling tower media increasing life and effectiveness of your cooling tower. Installed either permanently or removable for easy cleaning. As they catch the cotton and seeds that would clog your fins or media you can easily brush with a broom or vacuum away debris.