anti backflow quiet inline exhaust fan

{"cid":"91225530","title":"AC 220V 230W Quiet Inline Exhaust Fan Anti-Backflow 6 Inch Ventilation For Indoor Air","imgUrl":"https:\/\/img.chinax.com\/nimg\/5b\/82\/19095e5ca95a4b3db2ed76bd4bb5-200x200-1.jpg","attrs":{"Price":"15USD ~80 USD","Brand Name":"Beiaole","Model Number":"DPT-315P","Minimum Order Quantity":"20 units","Delivery Time":"7 to 15days upon the receipt of full payment","Type":"Duct Axial Fan","Packaging Details":"Packaging method: External hard carton + internal sponge","Function":"Ventilation","Airflow direction":"oblique flow","Place of Origin":"Guangdong, China","product name":"Duct Fan","Customization Support":"OEM ODM","Rated frequency":"50HZ","Payment Terms":"L\/C,T\/T,Western Union","Material":"Plastic","Power Source":"Electric","Certification":"CE SAA CCC ISO SGS TUV","Supply Ability":"60000 Pcs\/Month"}}

{"cid":"91220443","title":"Temperature Humidity Controller Quiet 6 inch Inline Duct Fan for Air Circulation 120V","imgUrl":"https:\/\/img.chinax.com\/nimg\/ae\/59\/fbf36c454ba6a9d2ca1f7aaf8027-200x200-1.jpg","attrs":{"Price":"$5.15\/pieces 100-499 pieces","Minimum Order Quantity":"100 pieces","Type":"Axial Flow Fan","Applicable Industries":"Hotels, Garment Shops, Building Material Shops, Manufacturing Plant, Machinery Repair Shops, Food & Beverage Factory, Farms, Restaurant, Home Use, Retail, Food Shop, Printing Shops, Construction works\u00a0, Energy & Mining, Food & Beverage Shops, Other","Electric Current Type":"AC","Mounting":"Duct Fan","Blade Material":"Plastic","Place of Origin":"China","Voltage":"120V, 220","Warranty":"3 years","After-sales Service Provided":"Online support","Size":"4\/5\/6","Color":"white","Packaging Details":"Standard Export cartons","Supply Ability":"100000 Piece\/Pieces per Month"}}