I need to source economic wall vents to fix top and bottom to my external east and west walls.
The walls are Colorbond and the concept is to be able to ventilate the walls in summer.

So ... does anyone know of CLOSEABLE vents that will sit well in a corrugated wall?

This is a solar passive house and I'm including every option I can come up with to make it cool in summer, but capture and keep warmth in winter.

ALLVENT Ventilation Products
62 Enterprise Drive
BERESFIELD NSW 2332

T: 1300 883 544
F: 02 4966 8455
E: info@allvent.com.au

Hope this is helpfull.