Looking for the correct Channel Balance Replacement

Handy Person from Florida

Mar 25, 2019 3:09 pm

My wife and I are trying to locate the correct channel balance and its related parts.

We took the following markings off the existing balance.

34-4- IU CNC 2

We do not know what the markings describe, only 34 looks like the length.

Please provide what information we need to select the proper replacement and if it requires any additional plastic parts, their part numbers

Thanks, Frank

12 Replies

Bob from SWISCO

Mar 26, 2019 2:30 pm

Hi Frank. We need to see pictures of the nylon attachments at either end of the balance. Also, please confirm the length of the metal channel, not including the nylon attachments. Normally for a balance with this stamp number it would be 35", not 34". But best to check to be certain. Many thanks.

Quick Learner from Palm Harbor, Florida

Mar 30, 2019 8:22 am

Want to take you for your response. We are waiting for access to the rented condo to get the channel balance information you requested. We appreciate your help determining the correct replacement part number. Frank

Bob from SWISCO

Mar 30, 2019 11:24 am

Not a problem, Frank! We're here for you whenever you have that information.

Quick Learner from Tampa Florida

May 8, 2019 1:37 pm

Hi Bob, Sorry for the delayed response. This is in regards to a window balance replacement for NuAir window. It is for the left side when facing the window. The assembly is 35 inches long, less the plastic ends. I have enclosed a set of photos to help you select the correct replacement. The number that appears on it is 34 4 IU CMC 2.

I am interested in the availability and cost of a replacement assembly and any needed plastic end pieces. Thanks for your help! Frank

5 user uploaded images

Bob from SWISCO

May 9, 2019 1:10 pm

Hello again! Thanks for getting back to us. This is definitely going to be either our S380-35 or S385-35. The only difference between them is the depth of the shoe, which I cannot make out from your images. If it's 1" deep, then you want our S380-35. If it's 1-3/32" deep, then you want our S385-35 instead.

Make sure to account for wear in your measurements. What that means is, your shoe's depth may be less than it was. In that case you want to use your best judgement. If it's over 1" but less than 1-3/32", odds are it was in fact 1-3/32" but wore down over time from constant friction.

Quick Learner from Tampa, Florida

May 9, 2019 4:39 pm

Hi Bob,
I am not familiar with the term "shoe".

I assumed that it is the plastic end pieces that are attached to the rod assembly.

If so measured both sides and included photos One side is 1 inch, the other 1.25 inch.

I hope this helps. Frank

3 user uploaded images

Bob from SWISCO

May 10, 2019 7:03 am

Yes, Frank you are right. The term "shoe" refers to the nylon attachments on both ends of your balance. To properly measure the depth of your bottom balance shoe, look at the diagram below. Once you have measured your shoe, you will have a better idea on which balance to go with as a replacement.

Alternate view of 15-004

Bob from SWISCO

May 10, 2019 9:58 am

Based on your measurement, it sounds like you will go with the Series 380 channel balance. Give it another look to confirm this is the replacement balance for you. Let us know if we can be of any further help.

Quick Learner from Tampa, Florida

May 10, 2019 10:40 am

Hi Bob, Using your illustration I measured both plastic end pieces. The slide shown in a the illustration measures 1 inch, while the other end measures 0.5 inch.
This assembly will replace the one on the left side of the window when looking towards the window. Frank

Quick Learner from Tampa, Florida

May 14, 2019 12:04 pm

Hi Bob, Looks like the S385-34 channel balance.

One difference, the balance in your picture has a hook while my non functioning balance does not. Perhaps that is the reason it does not work. I enclosed pictures which show my balance without the hook. Thanks Frank

3 user uploaded images

Bob from SWISCO

May 14, 2019 2:15 pm

If your balance lost its hook that would make sense for why it doesn't work anymore. It happens all the time.