BIS perforated security shutters provide a transparent effect when background lighting is illuminated. This particular design of shutter offers a high degree of security with inner integral strength. Perforated shutters are commonly used when ventilation is a requirement. This type of door system can be produced up to 10mtrs wide in one single span. As well as a completely perforated curtain bands of perforated lath may be incorporated into solid shutters to give partial visibility or ventilation.

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