Older window balances needed

Thanks for writing in. This stamp code actually refers to the calibration of the spring inside the balance. The identity of the balance itself is actually determined by the style of nylon fittings on either end of the metal channel. If you could remove the balance from the window and show us a good picture of each nylon fitting, we should be able to identify what you need. The length of the metal channel, not including those end attachments, is also good to confirm. From there, we'll try and make a recommendation for you. Many thanks.

Thank you for your interest in SWISCO hardware.

The difference between the series 351 and series 390 balances lies in the shoe.

The series 351 channel balance has the 15-002 shoe while the series 390 channel balance has the 15-001 shoe.

The 15-001 shoe is 1/8" larger from front to back.

I hope you find this helpful. Please let us know if you have other questions.

Your shoe measurement should either be 1 inch (Series 351) or 1-1/8" (Series 390).

Please take another look at your measurement to determine which series balance you need.

If you are still not getting one of these two measurements, please send us additional pictures with a close up of the shoe.

Comparison of 15-001 & 15-002

If your bottom shoe measures 1 inch, you will go with our S351-25 channel balances with the 2430 stamp option.

Please let me know if you have any further questions.

Hey there! That looks like a top sash guide. Yours in particular could be either our 18-008 or 18-008H. Look them over and see what you think.