50db noisy level wall mounted ventilation system

{"cid":"91222833","title":"SDU-15 Wall Mounted Ventilation Unit with 500-1000 CFM Airflow Capacity, Energy Efficiency Rating A+++, and Maximum 50dB Noisy Level","imgUrl":"https:\/\/img.chinax.com\/nimg\/e3\/79\/583e0c4e7622a8628e7647da8a7d-200x200-1.jpg","attrs":{"Price":"negotiable","Model Number":"SDU-15","Minimum Order Quantity":"200","Delivery Time":"3weeks","Place of Origin":"China","Payment Terms":"L\/C,D\/A,D\/P,T\/T,Western Union,MoneyGram","Packaging Details":"Wooden box packaging","Airflow Capacity":"500-1000 CFM","Application":"Heater, Cooler, Purifier","Energy Efficiency Rating":"A+++","Voltage":"120V\/240V","Warranty":"1 year","Layout":"Coaxial","Wattage":"50W","Transmission Form":"Gear","Production Capacity":"200000","Transport Package":"Wood+Carton","Principle":"Mixing Heat Exchanger","Mounting Type":"Wall Mounted","Noisy Level":"Maximum 50dB","Timer":"Yes","Power Consumption":"14 watts"}}

{"cid":"91223450","title":"SDU-15 Wall Mounted Ventilation Unit with 500-1000 CFM Airflow Capacity, Energy Efficiency Rating A+++, and Maximum 50dB Noisy Level","imgUrl":"https:\/\/img.chinax.com\/nimg\/e3\/79\/583e0c4e7622a8628e7647da8a7d-200x200-1.jpg","attrs":[]}