https://www.overseadia.com/en-US/detail/4acba52f2948caf1ae2419e87b4acfd7 The ACA diagonal duct fan is a high-performance ventilation solution designed to improve air circulation and quality in your living or commercial space. The ACA-12 model in white color is an efficient and durable fan that can be easily installed in any duct system. With its advanced technology, the ACA diagonal duct fan ensures optimal air flow, low noise, and long-lasting performance. Whether you need to ventilate your kitchen, bathroom, or any other room, the ACA diagonal duct fan is an ideal choice for your ventilation needs.