Series 500 spiral tube sash balance with cross piece for a non-tilt window. The tube measures 38" in length with an internal rod that measures 38-1/2" in length. The tube diameter will actually measure 9/16" but it is considered 5/8" in the trade. Spiral window balances come fully lubricated and ready to be charged.
|Color Tip ||Sash Weight Range|
|Red ||12 to 30 lb |
|Black ||31 to 40 lb |
*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.