55dB quiet operation roof vent fan

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Some information about 55dB quiet operation roof vent fan:

Product Type	Solar attic fan
Company Name	SUNNY INTERNATIONAL POWER LIMITED
Production experience	10+years
Place of Origin	Guangdong,China
OEM and ODM	Acceptatble
Product Features	Environmentally friendly,Low maintenance,Quiet,Intelligent,Economical and affordable...
Power Source	Solar
Motor	Grade BLDC Motor
Application	Commercial,Shed,Shopping mall,Gymnasium,Factory building,Livestock farm,Warehouse...etc
Payment	L/C,Cash,Western Union...etc
Whole unit warranty	5 years(in condition of no acid nor alkali corrosive environment)
Designed lifespan	15 years+
Materials	Metal&Plastic
Packing	99 * 30 * 89 According to container size, standard export package
Certificate	ISO9001,CE....
Battery	lithium battery
Color	Blue,Grey,White, and customized color
Port	HK,Shenzhen...
Control Method	Intelligent control
Trading Country	North America,Europe,Australia,Southeast Asia,New Caledonia,Singapore,Philippines,Ghana,Australia,Thailand,South Africa...
Selling Units	Single item
Work Time	Day & night nonstop, sunny hours by solar panel, sunless periods by battery
After-sales Service	Online support