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100MM/4" Gravity Shutter - White

£2.90
SKU EX007W
Ideal fuss free solution when you need to install a hole in an external or internal wall. Suitable for use with 4”/100mm fan via round ducting. - For use with 4”/100mm fans - Compatible with 4”/100mm round rigid or flexible ducting - Prevents backdraught air and rain penetration - Prevents objects of vermin entering when the ventilation is not in operation