Product Name: 4 Inches Ultra-Quiet Plastic Mixed Flow Inline Duct Fans Model NO.: HZ-100F Certification: RoHS, ISO, CE, CCC Pressure: Medium Pressure Flow Direction: Mixed Flow Usage: for Experiment Material: Plastic Motor: 100% Copper Bearing: Ball Bearings Trademark: meansoon Transport Package: Cartons Specification: HZ-100F Origin: Hangzhou HS Code: 8414599099 Product Description Ultra-quiet plastic mixed flow inline duct fans HZ-100FULTRA-SILENT MIXED FLOW INLINE DUCT FAN- with a detachable body and small size and long-life ball bearings General DescriptionUltra-silent mixed flow inline duct fan is fit for duct ventilation with middle pressure, especially available in quiet occasions.We use entirely new ABS Plastic with high strength to make case and blades.Impeller is designed with hydrodynamics principle to reach smooth airflow and lower noise efficiently.Midpiece is detachable, easy to maintain and clear up.2-speed, adjustable motors with long-life ball bearings and IP44 protection.Suitable power supply: single-phase 220-240V. 50/60 HzFan is available to run at ambient temperature -10~+60ºC