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Featuring Unique TRI-TEC® Anti-Sag Border Control System Torsion Anti-Sag Border Spring • Flexible yet firm border sleep support • Retains level border for edge-to-edge sleeping comfort Expansion Border Stabilizer Springs • Head-to-foot border row coils positioned to stabilize border rods • Provide enhanced integrity to the total unit Compression Body Support Springs • 100% working wire • Open end coil increases firmness as more weight is applied • Assures independent sleeping comfort without roll-together
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