Periscope Vent - Black

To provide ventilation below suspended ground floors.
Always use in conjunction with a Timloc airbrick and Timloc extension accessories.
Equivalent area of 6000mm per unit.
Features
-Telescopic and adjustable for a step of 3, 4 or 5 brick courses.
-Special grille included to prevent entry of vermin.
-Manufactured by injection moulding in polypropylene.
-Black finish