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The SOUTHWARK METAL SP90-24GA_16IN is a 90-degree spiral round sheet metal elbow fabricated from hot dip galvanized steel at 24 gauge material thickness. Designed for round duct systems, this elbow redirects airflow at a 90-degree angle within commercial and residential HVAC ductwork. The spiral construction provides consistent roundness and structural rigidity along the elbow body. With a uniform 16-inch diameter on both the inlet and outlet, this fitting maintains full airflow cross-section through the turn. Sheet metal mechanics and HVAC installers working on commercial or large-scale residential systems rely on fittings like this for trunk and branch duct routing.
This elbow is suited for round spiral duct systems in commercial HVAC applications and larger residential forced-air installations. It is commonly installed where duct runs require a 90-degree directional change while maintaining a consistent 16-inch diameter. The hot dip galvanized finish provides corrosion resistance for both interior and exposed mechanical room installations. Fabricated to meet ACCA and SMACNA standards, this fitting is appropriate for supply and return air duct systems requiring code-compliant fittings.
Designed as an OEM-style replacement and standard fitting for 16-inch round spiral duct systems installed per ACCA and SMACNA guidelines.
Installation of this fitting should be performed by a licensed HVAC technician or sheet metal mechanic familiar with round spiral duct systems. Power down the air handling unit and relieve any system pressure before beginning ductwork modifications. Secure connections using approved sheet metal screws and seal joints with mastic sealant or UL 181-listed tape per SMACNA installation standards. Follow local mechanical codes and the applicable SMACNA duct construction guidelines for support spacing and hanging methods.
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