Window coil

Question

Hi,
I read your thread on your website about different model of coils. I don't find any in print on my coil. However, the tilt window weight 12.6 lbs. the coil measures 1.25cm width. Can you help to advise on the model number?

Bob · Accepted Answer

Thanks for posting. See our 15-177 Pivot Shoe, which works with Series 152 Coil Balance springs. For a sash that weighs exactly 12.6 pounds, you could use two of the S152-6 6 pound springs, one for each side of the sash. This would give you 12 pounds of support overall (being within 1 pound of the exact sash weight works just fine). If you wanted covers for each coil, see the 15-143, 15-144 and 15-145. These parts 'sandwich' around each coil. Let us know if you have further questions.