Hi,
I'm pretty sure I need two 2820 /S390-29 channel balances. It's a standard 29".
This old NUPRIME window is also missing a lock. Is that something you can provide? I included a photo of what remains of that. I see a NUPRIME window sweep lock (90-042) on your site. The screws on my old lock are 1-14". Is that the only important dimension?
If I replace the channel balances, will that keep the window sprung open unless I replace the lock? In other words, should I replace the lock first?
Thanks,
Stan
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Casey from SWISCO responded:
August 14, 2020
Hi Stan, It looks like you have either our S351-29, with a 15-002 bottom attachment, or S390-29, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2820 spring strength option for your replacement balances. As for your sash lock, I agree that the 90-042 should work as aa replacement as long as your lock has the same 1-1/4" hole spacing. Thank you! 
Comparison of the S351 and S390 balance shoes.
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Casey from SWISCO responded:
August 17, 2020
Do the dimensions of the 18-127 top sash guide match up to yours? If so, I agree that this looks like a suitable replacement option. |
