This cast iron antique black air brick/vent is a unique and stylish addition to any home or building. It is a great find for collectors or anyone interested in preserving the historical character of their space. The sturdy cast iron construction makes it durable and long-lasting. Measuring 9x9 inches, this air brick/vent is the perfect size for a variety of ventilation needs. The classic design features slats or holes for air flow, making it both functional and beautiful.