Oval shape|Our Products are Hand-Crafted to Reduce Noise and Friction and Constructed to Maximize Efficiency by Increasing Airflow without Leaks|The Quality of Our Galvanized Steel Allows Us to Create Fittings that are Rust-Resistant and Durable|All Southwark products are designed and manufactured for use within forced air systems, providing effective distribution of conditioned air from the air handler to every room of a residence

ACCA/SMACNA/NATE