Gravity Shutter Grill White 100mm/4"

Knightsbridge EX007W Gravity Shutter Grill White 4" 100mm, ideal fuss free solution when you need to cover an extractor fan hole in an external or internal wall.

Features 

For use with 4”/100mm extractor fans via ducting 
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