Need new channel balances

Quick Learner from california
I need new channel balances. the length of the metal is 30" and the width is 1/2".

The marking reads 29 3 B.S.I 0L

The window weight is about 20 lbs
Window is non-tilt

On the shopping section, it looks like either an S380 or S385 but I can't tell the difference
5 user uploaded images
8 Replies
Emily
Emily from SWISCO
SWISCO
Expert

Thank you for reaching out to us! I agree that this is either the Series 380 or Series 385 but I'm afraid I can't determine which one you have. The difference between these two balances is the depth of the bottom fitting so you will need to measure as shown below. I also recommend the 2930 option. A pair of balances with this stamp will support a sash weighing 16 to 23 pounds. 

Comparison of the S378, S380 and S385 balance shoes.
Comparison of the S378, S380 and S385 balance shoes.

Quick Learner from california
I measured the bottom fittings.

On most, it looks slightly less than an inch - about 15/16". But I noticed one fitting was different. It looks like it is a full inch. So now I'm thinking the others are just worn down from use.

All of the balances have the same markings.

From these pics, does this look like the case to you?
5 user uploaded images
Emily
Emily from SWISCO
SWISCO
Expert

It's indeed possible that your shoe has worn down over time but I recommend you re-measure just to confirm. We also have the 15-029 shoe which resembles one of the shoes shown here but this measures 7/8" deep. Can you also confirm if the balances shown here with different shoes are from the same or different windows? 

Quick Learner from california
All of these channel balances (and more) are from the same size windows in two bedrooms. Almost positive they are all original to the house built in 2004.

It's hard to capture in the picture but all of them (except one) look like they are somewhat worn down. Some are uneven. I didn't realize it until I found the one different one with a cracked wing that looks unworn and gave them all a closer look.
5 user uploaded images
Tom
Tom from SWISCO
SWISCO
Expert

Hey there! Emily isn't here today, but I'll do my best to help out.

I've never seen a shoe with that kind of wear before. It's weirdly flat, which makes me think that these were in fact cut down. I wonder if whoever installed these to begin with bought the wrong size and had to cut them with a utility knife to get them to fit. I'd be lying if I said I've never done the same thing. That would also explain why they're so uneven; whoever did it was probably in a rush.

Either way, it seems we have two options ahead of us right now: 

1) We assume that the shoes were worn down, and therefore go with the 1" depth option. That's our Series 380. In a worst case scenario, they're a little too thick and you end up having to reduce the shoe depth yourself.

2) We assume that the shoes were, in fact, altered. In that case I can set you up with a custom order balance that uses the 15-029. This has a 7/8" depth, which is about the same as what you have now. However, the worst case scenario here is that the shoes are too small, which isn't something you can adjust. The balances would still work (sort of) but the window wouldn't be braced properly, which would lead to the window shifting from side to side during operation.

It's ultimately up to you which route you want to take. I'm happy to accommodate you either way, just say the word.

Quick Learner from california
I feel like the footings are slightly larger than 7/8" - so I'm guessing they were cut. Which makes me want to order the 1".

How difficult are they to trim down (if necessary). Would that be a utility knife or could I sand it down?

Also if we wanted to order some of each to see which one works best - what is the price difference between the two?

Also I'm assuming the footings have to be factory installed and I can't just order extra footings and swap myself. Correct?
Tom
Tom from SWISCO
SWISCO
Expert

I personally use a utility knife, but I have a few colleagues who like to sand them down, too. It all depends on preference. Just make sure to wear safety gloves if you decide to go with a utility knife, just in case. Also note that any balance altered this way unfortunately cannot be returned for a refund. You can see more information here.

Lastly, yes, you can just order the 15-029 separately and install it yourself if you wanted to. It takes a few specialized tools but it's honestly not that complicated once you know what to do. We even have a video guide that shows you how to do it.

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