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The SOUTHWARK METAL MFG CO SP556 is a six-inch spiral end cap made from twenty-six gauge steel. This durable end cap features a riveted connection and is designed for non-adjustable applications. Manufactured from hot dipped galvanized steel, it offers reliable strength and corrosion resistance.
The SP556 is ideal for connecting spiral ducts in HVAC systems. It provides a secure closure for duct ends, maintaining airflow efficiency.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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