Square Weather Louvre

Square weather louvres protect external wall openings while letting the ventilation system breathe. Made from durable, lightweight aluminium with the classic angled-blade profile, they balance weather protection with airflow and suit intake and exhaust duties on everything from domestic extract runs to commercial plant rooms and facade ventilation.

Eighteen stocked sizes run from 150mm x 150mm all the way up to 1000mm x 1000mm in 50mm steps, so there is usually a size on the shelf to match your opening. The size ordered is the neck size; the overall face is 50mm larger on both axes. To connect a square louvre to round ducting or flex, add one of our plenum boxes.

Order by 3pm for next-day delivery on stocked sizes. For non-square openings, our made-to-measure rectangular weather louvre is priced instantly online up to 1800mm x 2400mm, and circular weather louvres suit round duct terminations.