SeaMark Plastic Opening Mushroom Vent 150mm White Sealing Flange Boat Motorhome Caravan

White Plastic adjustable mushroom vent with screw type opening and closing mechanism.
Complete with a weather resistant rubber seal when fully shut
Ideal for preventing mildew in caravan boat cabins Motor Home.

External Diameter 150mm
Internal Diameter 108
Height 35 ~75mm
Hole Centres 128mm
Cut out 110mm.