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Extension Springs
Extension Spring 300 LB Tan (PAIR) – 7 FT Tall Door 25-42-300
Extension Spring 150 LB Red (PAIR) – 7 FT Tall Door 25-42-150
Extension Spring 110 LB White (PAIR) – 7 FT Tall Door 25-42-110
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Hardware Kits
Torsion Springs
Extension Springs
Extension Spring 340 LB Blue (PAIR) - 7 FT Tall Door 25-42-340 
Extension Spring 140 LB Blue (PAIR) - 7 FT Tall Door 25-42-140 
Extension Spring 150 LB Red (PAIR) - 8 FT Tall Door 30-48-150