The ball shaped weather louver is made of high quality stainless steel 201 or 304. It's used for fresh air ventilation.
Neck size: 100mm-300mm
• The ball weather louver is made of high quality aluminum, used for fresh air ventilation system as well.
• The ball louver cap not only rust resistant, but also waterproof .It complete with insect wire mesh .That can prevent insects from entering into the rooms.
• This type of air vent is incorporated with a set of louver blades. It's commonly used as exhausted outlet and ventilation on the exterior walls of washrooms, kitchens, warehouses, houses,apartments, condominiums, gymnasiums...ect.
• There are inverted spring hooks located on the neck , which are used to secure the device.