window guides for double hung Weld Jen wood interior, aluminum clad ex in about 2003.

It sounds like you need new balance shoes, but it's very difficult to identify what you need while everything is still installed. This service requires unobscured photos of all relevant hardware, and in your case that will require full removal prior to taking your pictures. Would that be possible?

I'm afraid your balance assembly is too obscured to ID in these photos, so we cannot make a recommendation until then.

The manufacturer does suggest that this might be our Series 751 balance. But it's important to keep in mind that this has historically been made with a few different configurations; the Series 751 is just one of them, and many of the others are obsolete. We can usually supply those obsolete varieties as custom orders, but removal would be necessary to verify precisely which configuration we're dealing with.

For now, look over the Series 751 and see how well it compares. I strongly advise removing the original before you buy anything just to be safe.

Sure, come to think of it we do have an older video about our Series 751. It's a little out of date but should be relevant for your project.

There is one major difference between your window and the one in our example, which is that we have a thin wood trim that secures the jamb liner. You'll see my friend Mike here remove that before he slips out the jamb liner.

Reviewing your photos, though, I don't see such a trim. That means your jamb liner is probably pressure-fit. That means the only thing holding it in is the sash itself (while it's installed anyway, and a little friction (while it's not). Once the sash is removed it should pull out by hand.

No problem! This thread will remain open. 

Perfect, thanks! I can indeed verify that our S751-27 is a good fit for this window. I would also recommend the 26R stamp, which carries 10 through 19 pounds. According to my records this is a more modern version of the old RT stamp, but you might want to weigh your old sash on a scale just to be sure. These old window manufacturers are unreliable at best, and I personally would rather trust my eyes before I trust them. If your sash weight falls within that weight range then the 26R stamp will be perfect.

I'm very glad you checked. For a 24 pound sash, I would recommend the 26HD. This carries 19 through 24 pounds exactly. We also sell the 26TG, which carries 24 through 31. Both technically carry 24 pounds, so both can work. If your sash weighs even a little more or less, then pick between these stamps respectively. Assuming your sash is precisely 24 pounds without any overlap then I would just go with the 26HD.

It's curious that they would use the 26RT stamp on a 24 pound sash, but the original installers may simply have gotten it wrong. Happens all the time. Like I said, I'll always trust my eyes before I trust whoever did the job before me!

For the pivot bar, see our 26-150.

Sure, that's been known to happen sometimes. It's not a universal rule, more commonly the top and bottom are identical, but it really depends on the application.

For the 23.6 lbs sash, our 26HD remains my top suggestion.

For the 26 lb sash, go with our 26TG stamp instead. That carries 24 through 31 pounds.

You're very welcome! Thanks for the order and please don't hesitate to reach out if you had any other questions. We're always here to help.