Swifter ULS Series provides solutions for sound-sensitive environments. The ultra-low-sound axial fans are available in seven standard diameters ranging from 63 to 156”. The extra-wide chord-width curved blades allow for smooth airflow with minimum air separation and turbulence. Constructed of high strength, lightweight fiberglass-reinforced polyester with a UV-resistant surface coating and leading-edge protection, the single-piece molded fans offer performance, reliability and durability. They are suited for use as OEM or replacement parts in equipment such as evaporators, cooling towers, condensers and exhaust and ventilation systems.