Single hung window balances

Question

I have 12 apartments with a few different old aluminum windows but currently I need:
Single hung spring loaded window balances 1/2 inch wide and 3/8 inch deep.
One has the number 1620
One has the number 2230
I have an 18 inch long round swivel with no number I can find.
Also what other plastic parts do I need for the windows themselves?

User submitted a photo of a window balance.

Paul · Accepted Answer

Thanks for posting. Looks like you have one spiral balance and two channel balances. It's tough to say exactly what you need based on these photos, but I would start by looking at our Series 600 spiral balance, which has a 5/8" diameter tube, and our Series 390 channel balance, which comes with the 19-005 top and 15-005 bottom. Carefully go over the information and pictures we have for all of our balances to confirm. You can also see our entire selection of balances here.