405 Series 170 Coiled Balance Spring
Product Code: S170-405
This coil spring measures 3/4" wide x 40", has a short tongue, and is stamped with number 405. This constant force balance is used in CertainTeed double hung window sash support systems with a support weight of 5 pounds.
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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