pulley window balancer
A home owner from 91320 says:
August 10, 2016
I need a number of replacement pulley and spring type balancers. The existing ones are stamped 2320 BSI ND
Tom from SWISCO responded:
August 11, 2016
Thanks for posting. Sounds like you have a 24" block & tackle balance with a stamp option of 2320. I'm afraid that's all I can tell based on your information, though. Now you just need to pick out the top and bottom fittings in order to determine the Series.
I recommend that you look at our Channel Balance Home Page and follow the steps in order to find the Series that best matches what you have.