Extractor Fan Gravity Flaps 190mm x 190mm 

They are ideal for mounting on an external wall

Suitable for internal and external mounting

Specification:

Four Gravity Flaps

Comes with 4 Fixings

4 Screw Cover Caps

Easy screw fixing 

Flat on the back

Dimensions:

A-150mm, B-150mm, X-190mm, Y-190mm