Heavy-duty (10, 000 cycles) extension springs have double loop ends for extra durability. 5 sizes will replace most all spring configurations on residential doors that are no higher than 7 ft. 1/8 in galvanized carbon steel aircraft cable.
2 springs per wood door and 4 springs fiberglass door
2 springs per wood door and 4 springs fiberglass door
Replaces most 7 ft residential garage door configurations
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