The SOUTHWARK METAL MFG CO 28R is a 6" x 14" x 6" end boot with a 4-inch extension, designed for efficient airflow in HVAC systems. Constructed from durable materials, this fitting ensures long-lasting performance and reliability. Its dimensions allow for easy integration into existing ductwork, while the extension provides flexibility in installation. The 28R end boot meets industry standards, making it suitable for both residential and commercial applications. This fitting is essential for optimizing air distribution and enhancing system efficiency.