@This kind of  Aluminum shutter is made by Smart ventilation itself.
@We can make all size according to customer's request and we make sure the high quality.
@ For this kind of aluminum, we have a strict system of testing, the shutter UV resistance is very strong, and shutter can be used outside for long time but without out  of shape and color fade.  

@We can provide customers with different size of aluminum fit to the fans;

@Good looking and easy to clean.

@Widely used for the exhaust fans and poultry equipment.

@Rustless.

  Welcome to roder as you requst.