Steve from SWISCO responded:
October 1, 2021
Hello, thank you for posting! Please take a look at our Series 152 Coil Balance with the 15-175 Pivot Shoe. I believe that the stamp on the coil is a 9. To confirm this, you can weigh your window sash. If the sash is 24 pounds, you will need 6 pound coils. If the sash is 36 pounds, you will need 9 pound. Thank you, |