Balance coil springs and blocks

We unfortunately don't sell this type of pivot shoe with a screw on coil spring. Instead, we have a similar style in our 15-199. This is 1-1/4" wide by 17/32" thick that uses Series 160 springs, which hooks on. Look it over and see if you think this can be used as an alternative.

We don't sell these as kits, unfortunately, just the individual components.

For a 13 pound sash, you can use one S160-6 spring on each side. These carry 6.5 pounds per spring, so using one on each side will add up to 13 pounds of support exactly.