Caldwell Series 150 Spirex 5/8" Heavy Duty Spiral Window BalanceSKU:
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- The 150 Series Spirex is a Heavy Duty Spiral window balance for non-tilt applications where the sash is 30-40 lbs.
- 5/8" Diameter
- This balance is ordered based on tube length and sash weight. When taking measurements, measure only the metal tube. If the balance is not available, measure the height of the visible glass. This will be your tube length. Then remove and weigh your window sash on a bathroom scale and confirm that it is within the 30-40lb weight range of this balance. These measurements are crucial to the performance of the balance. Check out our guide on measuring spiral window balances for more info on how to measure your balances properly.
- Weight capacities are listed per pair of balances in pounds.
- For optimal performance, we recommend replacing both balances at the same time.
- Uses Spirex and Spiro-mite Tensioning Tool
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