Coil balance certain teed vinyl replacement windows

Question

Hi I need to replace the coil balance in window the existing coil balance stamped #407 under this #it loos like the letter j would I use you part # S170-407.

Bob · Accepted Answer

Thanks for writing in. If you have a Certainteed window, then most likely you have a 15-192 Pivot Shoe; this indeed is compatible with our Series 170 Coil Springs. If so, then yes, you're absolutely right, a #407 stamp on the coil spring indicates you'd want to replace that coil with our S170-407, which is meant to individually support 7 lbs.