Balance Rods

A quick learner from FL says:
I would like the specific part number for these balance rods. The rod is 31" long and stamped with 3040. Thanks!
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Emily from SWISCO responded:

Hello!

I'm confident we can help but it appears you only show the bottom fitting in these photos. I'll need to see the top fitting for this balance as well in order to identify it. Let me know if that's something you can get! 

A quick learner from FL says:
Hello, thank you for your reply. I have attached additional photos. Please let me know if you need anything else.

Thanks!
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Emily from SWISCO responded:

Great, thanks for getting back to me! My recommendation is either the S380-31 or S385-31, depending on the depth of the bottom fitting. Measure as shown below to determine which Series is best for your repair. I also recommend the 3040 strength option.

Comparison of the S380 and S385 balance shoes.
Comparison of the S380 and S385 balance shoes.

A quick learner from FL says:
Great, thanks for your help!
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Emily from SWISCO responded:

You got it! If you need anything else just let me know.

A quick learner from FL says:
Hello again, I decided to replace the rods for all my windows. I have attached the pics for the first new set of rods and will add two additional posts for the remaining 2 sets of rods. These rods are 30" long.
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A quick learner from FL says:
Hello, here is the second new post (2 of 3) for the second set of rods. These are 31" long. The bottom measurement appears to be around 1" (similar to all the rods I have).
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A quick learner from FL says:
Hello, here is post 3 of 3 for the third new set of rods. These rods are 25" long and the bottom measurement is around 1". The stamping is 24DS 31.

Thanks!
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A quick learner from FL says:
I forgot about one window, the length of these rods are 19" and have a bottom measurement of around 1".
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Tom from SWISCO responded:

Hello! Looks like you need four additional balances. In all cases, the same rules apply as what we went over for the first balance: that is to say, these are all either the Series 380 or Series 385. Odds are they're all the same Series (whichever one you go with) but it can't hurt to check just in case.

As for the stamps and sizes, I'll list them in order.

  • 2950: 30" long balance with the same 2950 stamp
  • 30DS35: 31" long balance with a special "double spring" for heavier calibrations. The final code on this stamp indicates a sash weight of only 35 pounds, though, so you could use our 3060 stamp option to work in the same capacity (load range of 32 through 35 pounds). You may want to weigh your sash to verify this is correct.
  • 24DS31: 25" long, but another "double spring" balance. In this case the stamp suggests a 31 pound sash, so you can go with our 2465 option (load range of 30 through 33 pounds). Just like above, you should weigh your sash to be 100% sure.
  • 1840: 19" long balance with a 1840 stamp

That should above cover it, but please feel free to reach out if you had any other questions.

A quick learner from FL says:
Great, thank you for all your help!
A quick learner from FL says:
Hello, I measured the sash and I am right at 35lbs. If the rod model has a weight range for 32-35 lbs and the next model has a range of 35 to 38 lbs, is it better to go with the rod where I am at the max threshold or the other rod where I am at the minimum threshold weight?

Thanks!
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Tom from SWISCO responded:

Honestly, you could go with either option since your sash weight falls within both weight ranges. The decision is ultimately yours! 

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