Hi-perm lamination for improved life. Precisely balanced Aluminium blades for high air delivery. Simple and elegant look. Weight with tolerance : Packed Motor set - 270mm X 210mm X 190mm (± 10%) Weight with tolerance : Packed Blade set - 540mm X 140mm X 45mm (± 10%) The Motor of the Fan is made from MS Sheet metal covers, Electrical grade Stampings and Copper wire.