28" Channel Balance Circa 1992
Hello, thank you for writing in! We would be happy to help you find replacement channel balances. The stamp that you indicate tells us the necessary spring strength, but we will still need to determine what series you have. In order to do this we will need to see clear images of the plastic fittings at either end of the channel. You show us one of these fittings, but I will need to see the other one as well in order to make a recommendation. I would preferably like to see them from above with the open side of the channel, where the spring is revealed, facing up. Thanks!
Metal is 9/16 wide
Hello, thank you for writing in. It looks as though you could have either our Series 351 or Series 390. The difference lies in the depth of the bottom shoe, which you can see detailed in the image below. However, the stamp is a little unusual. I would recommend weighing your window sash and referring to the chart on the product page in order to determine the correct option.
Great, that would indicate that you'll need the Series 390. If the metal channel is 28" long, then you'll need the S390-28. Since your stamp is a little odd, you'll need to weigh your window sash to determine the correct option. Let me know if you have any further questions.
