Do you sell these Nami/Dura Trust Springs?

Question

I have a double hung vinyl window marked Nami and Dura Trust.  one of the springs has broken and I can't hold the bottom window open.  I need a new spring for the one side.    Thanks.  I believe it is an inside sash 24x48.  pics of intact spring, and broken spring where coil is at bottom of window.

Bob · Accepted Answer

Thanks for posting. This looks like a 15-087 Balance Shoe. This uses Series 180 Coil Balances. That 7 on the shoe might indicate you need an S180-7 7 pound spring, but to be safe, look for a stamp on the actual spring. If there is none, give me the exact weight of the window sash; I can work out the spring weights needed from there.