100mm/4 inch Gravity Shutter – Black

Description

Knightsbridge 100mm/4 inch Gravity Shutter – Black

Ideal fuss free solution when you need to install a hole in an external or internal wall. Suitable for use with 4 inch/100mm fan via round ducting.

• For use with 4 inch/100mm fans
• Compatible with 4 inch/100mm round rigid or flexible ducting
• Prevents backdraught air and rain penetration
• Prevents objects of vermin entering when the ventilation is not in operation