7FT Door Extension Springs Cables 7×19 strand 1/8″ – a great upgrade in comparison to the standard extension spring cables, they are made up of thinner strands of cable but many more. For example the 7×19 strand cable is 19 thinner strands per bundle then 7 bundles are twisted together to make the 1/8″ cable. The 7×19 strand cable is much stronger with a capacity of 1950 lbs and much more flexible than the standard 3/32″ extension cables.
Along with being stronger and more flexible the 7×19 strand cables are much easier to work with when adjusting spring tension on an extension spring door.
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