Window Balance Identification

Thanks for reaching out to us. These balances look typical at first glance, but I note that the bottom fitting in your second image there has a bit of an odd shape. That's not one I often see on this design.

Before we go any further, can you please show me that fitting from other angles? Can you also verify the length of the metal channel in each case (or as close as you can).

Given that the stamps are faded and difficult to read, you're also probably going to want to get the exact weight of each sash. You ordinarily don't have to, since the stamps tell us what we want to know, but you aren't so lucky. Any common bathroom scale will do.

Thanks! This is a big help. Please give us a little more time to check on this and we'll get back to you ASAP.

I agree, our Series 380 looks to be our best option. The shoe is a bit of a different design, but as long as the depth is the same I think you'll be okay.

Regarding the stamps, I really think it would be best if you gave me the exact weight of the sash in each case, down to the ounce. I'm happy to see if these larger calibrations are available, but in order to do so we need to know exactly what weights we're dealing with here. A range will not be sufficient for our purposes.