Salt fog rated and tested to GR-487-CORE, ASTM B117-11, and ISO 9227, HPLC (High Performance Low Cost) series withstands tough environmental conditions, including salt fog, salt spray, temperature changes and humidity. Products also meet or exceed the IP56M specification. FDA2 series HPLC AC fans feature thermal protected external rotor capacitor-run induction motor, 2 ball bearing system, aluminum alloy frame, one-piece forged steel impeller, and optional UL94V-0 plastic impeller.