The Fernco AC418-139 is a 4-inch A/C x 1 1/2-inch donut designed for flexible connections in HVAC systems. Made from durable materials, this donut provides a reliable seal, ensuring efficient airflow and performance. Its unique design allows for easy installation and adaptability to different pipe sizes, making it suitable for various applications. This product meets industry standards for quality and reliability, making it a preferred choice for HVAC professionals.
