Superior window replacement channel balance

Hello Paul,
The windows in my home were manufactured by Superior Windows in Ontario, California. I have several single hung, dual glazed aluminum windows with the following numbers stamped on the balance: 23 4 JT CMC 2 . The sash is 32 X 36 dual glazed (heavy). Can you help identify the top and the shoe. These do not have tabs or ears on them to keep them centered in the channel. I hope the pictures are clear enough

The length of the metal channel is 24". The bottom shoe. When I compare the two, is seems to resemble 15-002 more closely. But it is 1 1/8" wide so it could be 15-001.

It looks exactly (90%) like 15-002 BUT it is 1-1/8" not 1" like 15-002. So If width is the more important measurement, then 15-001 it is.

Yes, the S390-24 is a good match. The metal channel is 24" not including the ends. I will have to pull the sash and weigh it to verify that it falls within 18 - 22 pound range. It may be heavier since it is dual glazed.

Tom,
The sash weighs exactly 25 lbs.

Tom,
I didn't realize it but I've been talking to you about an old balance that I had in the garage which was not the one I was looking for. When I pulled the sash to weigh it, I checked the existing balance and here is what I found. After showing me how to measure and check style, I have found a perfect match to what I have. The metal portion is 34" long. (I should have realized that 24" was too short). The top is 19-002 (no wings) and the shoe is a 15-004 winged. These are perfect matches in dimensions and style. Stamped on the sash is J A3330. The 34"series 350 channel balance is a perfect match. However since it weighs 25lbs, I think I should order the 3340 because it falls within the 23-28lb range. The 3330 that has been in there has never seemed to be strong enough. What do you thin?