Complete Coiled Spring Assembly for Window Channel

We immediately recognize your pivot shoe. Our 15-177 should be able to replace it with no issues. This shoe is used with the 1/2" wide coil springs, like the Series 152. There is a spring weight number stamped on your current coil spring. You will need that stamped number to order the correct spring. We placed some helpful media guides on this page for additional information. 

I'm afraid we don't sell the entire assembly as one complete kit. All the parts are sold separately. If you cannot reuse your old cover, I recommend our 15-143 bushing, 15-144 cap, and 15-145 drum. These pieces snap together over the coil spring. 

You can roughly estimate the right weights by taking the weight of the sash and dividing by the number of coils per sash. If the answer were roughly 5 pounds, you'd use a bunch of 5 pound coils, etc.

Well, there seem to be two coils per side, which is four coils total. That's what I meant by "a bunch."

The sash almost certainly weighs more than 5 pounds, so that's kind of a funny example; I would imagine it's closer to 15 or 20.

In that case, as an example, I was saying you might need four 5 pound coils, which would be for a 20 pound sash. See what your actual weight is and do the math that way.