Series 303 red tip spiral window balance with 15-010 shoe attached. Tube measures 5/8" x 27" with an internal rod that measures 30-5/8" in length. This sash support system is primarily used in single hung aluminum windows manufactured by Keller.
|Color Tip ||Sash Weight Range|
|Red ||7 to 29 lbs |
*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.