Concrete air bricks or 'vent blocks' allow the wind to blow through a brick wall, meaning that there is less resistance during a strong storm, which in turn means that it is less likely to blow over.
Relevant image keywords:
air block, air bricks, architecture, architecture and buildings, backgrounds, block, blocks, brick, brick wall, bricks, brickwork, building exterior, building feature, building project, building work, built structure, cement, close-up, construction, construction material, contemporary, exterior, facade, feature wall, flower shape, full frame, gre blocks, grey, group of objects, hole, home, house, macro, masonry, material, mortar, no people, objects/equipment, ornate, outdoors, pattern, pointed, pointing, property, real estate, rectangle, red, red brick, red brick wall, red bricks, residential building, residential structure, rough, strength, surface level, surrounding wall, textured, vent, vent block, wall, weathered
