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Emily from SWISCO responded:
April 6, 2022
Hello! Take a look at our 15-192 CertainTeed pivot shoe, which uses the Series 170 and Series 171 coil springs, and compare the dimensions to yours to see if this matches up. If you're not sure what coil weight to choose, look for number(s) stamped on the spring. If there aren't any or if they're too faded to make out, you'll need to weigh your sash and divide the weight by the number of coils on both sides of the window to determine the correct strength option. If you need a new coil cover, see the 15-156 and 15-157. Let me know if you have any questions! |
