Product Description
This is a Series 390 channel balance for non-tilt windows. It moderates the operation of your window sash using a specifically calibrated spring and pulley system that allows the window to stay open when raised.
- This balance has a 28" long metal channel. When determining the length, do not include the attached fittings. Only measure the metal channel.
- Comes fully assembled with the 19-002 top and 15-001 (1-1/8" deep) bottom fittings and will be ready to install out of the box.
- The strength you need should be indicated as a stamp or imprint on your old metal channel. If you do not have a stamp, or cannot match it up to our options, weigh your sash on a scale and refer to the chart below.
- The width of the metal channel measures 9/16" but is considered 1/2" in the trade.
- Can work for either the left or right side of the window interchangeably.
| Stamp Option | Sash Weight Range |
|---|
| 2710 | 5 to 9 lbs |
| 2720 | 9 to 13 lbs |
| 2730 | 13 to 19 lbs |
| 2740 | 19 to 26 lbs |
| 2750 | 26 to 30 lbs |
| 2760 | 30 to 33 lbs |
| 2765 | 33 to 36 lbs |
| 2770 | 36 to 39 lbs |
| 2780 | 42 to 45 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.
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.
Helpful Tip!
The stamp option is a code that indicates how much weight a pair of balances can support. You can use the stamp on your original channel balance as a reference in most cases, or you can weigh your sash and refer to the chart above. If your sash€™s weight falls outside the weight ranges listed on that chart, or you are still unsure how to proceed,
ask our experts for help.
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