Looking at your photos, for your wood sashes, you can see our
S500-25 spiral balance with a red tip along with our
17-012 balance brackets. These brackets hook on the spiral balance.
To install these balances, you would drop them from the top on the side of the sash. You can use our
33-017 screw to attach the balance tubes at the top. Next, raise the sash and have someone hold it up while you attach the
17-012 with the
33-090 screw while the U-shape opening corrals the spiral. With your finger, bring up the spiral to the bracket and attach the
75-005 charging tool and turn the spiral clockwise three turns and hook it to the fork of the bracket. Repeat the other side and try the sash.
If sash creeps down, raise and hold up the sash and give the balances another turn or two.
I hope you have found this useful. Let us know if you should need any further help.