HPA Air Blower High Quality Portable Air Transfer Fan. High performance axial-flow impeller design. Durable rolled sheet steel casing with epoxy paint finish. Plastic handle for easy carrying. Robust OH&S approved safety guards. High performance induction motor, IP44 protection with built-in thermal cut-out protection. Tested and approved to comply with Australian and New Zealand electrical safety requirements. Sealed for life bearings, can operate at any angle. Suitable for operating temperatures up to 60C. Optional Flexible Duct – PVC fire retardant with operation up to 150C. 300mm diameter to suit fan, supplied in 5m lengths. Can be connected to make longer lengths. The Hydor HPA Portable Air Blower offers excellent air flow and pressure capabilities, and is designed specifically to provide temporary or permanent ventilation for a wide variety of commercial and industrial applications such as equipment enclosures, infrastructure pits, tunnels, construction areas, welding operations, vessel purging etc. This compact, powerful fan delivers up to 3 1.25m /s of air and pressure up to 350Pa.