Zigzag Spring (Sinuous Furniture Spring / Couch & Swing Spring)

The Zigzag Spring (also known as a Sinuous Spring or Snake Spring) is a heavy-duty suspension fitting widely used in the internal framework of sofas, armchairs, and outdoor swings. Cold-formed from high-carbon tempered steel wire, its continuous wave-like pattern provides optimal tension and weight distribution across the seating area. It prevents seat cushion sagging, maintains overall shape retention, and supports heavy dynamic loads. Installed directly onto wooden or tubular metal frames using specialized clips or anchor brackets.

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