Products Features:

1) Shutter: with a centrifugal system which can ensure the shutter open and close automatically, and makes it dustproof, waterproof.

2) Motor: the high efficient and energy-saving motor with protection grades: IP55, insulation class: F

3) Belt: Automatic tensioner to prevent the belt loosing and dropping off.

4) Stainless steel blade,no disortion,no broken