Light Force Silver Coil, Medium

Product Code: S175-SM

Light Force Silver Coil, Medium
Quantity Price
1-11 $3.56
12-49 $3.20
50-99 $3.03
100-249 $2.85
250+ $2.67
Product Description
This is a Series 175 spring for tilt windows. It moderates the operation of your window sash using a specifically calibrated coil spring that allows the window sash to stay open when raised and remain shut when closed.
  • This is a light force spring. The silver color indicates the strength.
  • Measures 1/2" thick.
  • Has a medium tongue, meant to install below a short coil in a coil balance system.
  • Designed to work with the 15-266 carrier, and 15-267 spring clip (sold separately).
  • This coil balance spring is sold individually, not in sets.
  • Can work for either the left or right side of the window interchangeably.
A balance assembly is used on each side of the window sash. To determine how many coils to use per balance assembly, please refer to the chart below.
Sash Weight Range Coils Per Assembly Use Coil Product Codes
4.5 to 9.9 lbs SingleS175-SS
10 to 13.9 lbs SingleS175-BS
14 to 19.9 lbs Dual S175-SS + S175-BM
20 to 23.9 lbs Dual S175-BS + S175-BM
24 to 27 lbs Triple S175-SS + S175-SM + S175-BL
28 to 34 lbs Triple S175-BS + S175-BM + S175-BL
*This information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
Good Idea!
Balances are sold individually, however, it is a good idea to replace both window balances at the same time. Pairing a new balance with an old one would cause the new balance to wear out faster.
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Customer Questions & Answers
Discussion Posts Last Post Date
Single hung vinyl window
This discussion includes image(s). 4 Mar 16, 2021
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