Simonton double Hung upper sash balance hardware

Hello!

We appreciate you reaching out to us. I'm afraid this window sticker doesn't help us identify what you have. If the window won't stay open then the odds are the balances are the culprit. Window balances are spring-loaded mechanisms that can be found on either side of the window frame. Their job is to regulate the opening and closing of the window sash. 

In order for us to help, we'll need you to remove an undamaged balance from the window and show us some photos. I may need more photos and information after that, but I have to know what to ask for first. Just something to keep in mind!

Thank you for getting back to us. You have two options based on what you show here. One option would be the 15-192 which uses the S170 and S171 coil springs. Note, you would need to shave down the aligners on the front of the pivot shoe's face so that it can fit into the track. 

The other option is the 15-259. This is designed to use the Series 159 coil springs and can work as-is without any modifications. The video below will walk you through every step of the replacement process.

Let me know if you have any questions!

The 15-259 pivot shoe can use either one or two springs per side as long as the coil weights are within a pound of the window sash's actual weight. You would also need to replace your existing pivot bars with the 26-083 as mentioned in the video above. 

To determine the appropriate coil weights, you will need to divide the sash weight by the total number of springs in the window. If you're still not sure, let me know the exact sash weight and I can calculate what is needed from there.

Please note, the 15-192 cannot be returned for a refund once it's been modified. If you decide to go with this part, we'll need to see a photo of your pivot bar removed from the sash to confirm if it will be compatible with this shoe. 

I'm afraid our department can't make calls. I can only respond right here on this page, I hope that's okay. 

Sure, the 15-185 narrow cover and 15-157 drum are used with the S170 and S171 coil springs. I just don't know what coil spring weights you'll need. In order for me to determine the proper weights, I'll need you to tell me the exact weight of the sash. It is also important that we see your existing pivot bar so that I can confirm if it will work with the 15-192 shoe or not. 

Thank you for the additional photos and information! You can use one S170-409 9-pound spring and one S171-407 7-pound spring on each side of the window. This will total 16 pounds of support on each side which will carry a 32-pound sash. Note, the S171 spring should be stacked on top. It is also important to note that this weight setup will work as long as the sash weighs exactly 32 pounds. Just something to keep in mind since I know you said that you don't trust your scale. 

I recommend you use the 26-336 pivot bar as a replacement but you will need to reuse the old cam in your original pivot shoe since this part isn't compatible with the cam in the 15-192. As for the screws, see the 33-072. 

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