Tom from SWISCO responded:
May 31, 2022
Hello! Your old pivot carrier looks like a match for our 15-087. This is also designed to work with our Series 180 coil spring. Look these parts over and let me know what you think! |
Tom from SWISCO responded:
June 3, 2022
Yes, that stamp typically means that each spring is rated to carry 7 pounds. With one 7 pound spring on each side, that means that the total sash weight ought to be 14 pounds. You can weigh your sash to confirm, that way you'll know beyond any shadow of a doubt. |