Window balance spring stamped 2990 38

Question

Would that be 38 for 38"? Need to know the sash cams to order as well...

I measured as follows.
5/8" width 16mm bottom
Total height 1-1/2". 39mm
11mm depth 7/16"
Screw hole center 14mm from bottom
Top 22mm 7/8"width

Casey · Accepted Answer

Hello,

We'd be happy to help but the stamp code on the balance does not indicate the correct replacement. To get started, we'll need to see photos of an intact balance removed from the window, including both end fittings, the pulley clip, and the connecting point between the spring and pulley inside the channel.

You'll also need to weigh your sash to determine which option you'll need since your stamp code is from an outdated system. There is a chart on the product page that explains how to choose your option based on the sash weight. I'd also recommend double-checking the length of your metal channel, which I suspect would be 30" long, not including the end fittings.

As for your top sash guide, we would also need to see an intact version of your guide removed from the other side or an identical window to compare to our inventory. Thank you.