Window parts

Hello! Your pivot shoe looks like a match for our 15-111, which is designed to be used with the 1/2" thick Series 160. I think these parts are just what you were looking for, but let me know what you think.

In answer to your first question, there should be a number printed on the band of your spring to tell you what the weight is. In fact I think I see it in your first batch of photos, specifically your third photo. It's a little faint, though, and my eyes aren't what they used to be. You should check that to see what it reads.

While you're looking at it, you should check to confirm that it's 1/2" thick too. Better safe than sorry. We also sell the Series 165, which is the same design but only 3/8" thick.

You are correct in noting that we sell these springs individually. If you have two springs per side, then you will need to purchase that many springs from our site. Please understand that all of our balance parts are sold separately, they don't come as assembled units. The shoe is our 15-111, the spring is either our Series 160 or Series 165, and the cover is either our 15-150D (1/2" thick) or 15-204 (3/8" thick).

If your spring is 1/2" thick then you can use our Series 160 and 15-150D cover. The design of the cover is a little different but as long as your springs are 1/2" thick then it will work just fine.

If there are no stamps printed on the spring that you can read, then you'll have to get the exact weight of the sash and then divide that number by 4, which is the number of springs used to support it. For example, if your sash weighs 24 pounds then you'll want four 6 pound springs. Hopefully that makes sense.