Havells Ventilair DB 12"(300mm) Unboxing and Installation

hello guys so I have purchased this new havells exhaust from amazon, and never buy such products from amazon because cheap doesn't mean they are in good state.
Specification
Power-70 watts @220-250 volts 50 hz
Rpm - 1400
Air delivery - 1790m3/hr
Equipped with double ball bearings