... . 3. One/two-way, plastic/iron are available Product Name: Exhaust Fan with Shutter and CoverSpecifications: 1) Use for: office, living room ... , department store,hotel and so on., 2) Size: 6", 8'', 10'', 12''3) Voltage: ... 220V 4) Frequency: 50Hz 5) Material: Full plastic and plastic with metal base can be choosen ...