Window replacement parts

Thanks for reaching out to us. I'm afraid neither of the parts you picked out will work. The top sash guide looks to be a match for our 18-171 and your channel balance will actually have to be a custom order, since it has a unique configuration. If you remeasure your metal channel, you'll see that it is closer to 26-7/8".

Your photos pretty much tell us everything we need to get started, but before we go any further I'd like you to tell me how many balances you needed. Once I know that, I'll email you an order link and price quote for that quantity.

While we usually recommend sticking with what you have, based on the description of your problem I think you can get away with using the 18-008  on your sash.

As for the balance, 1/8" makes more of a difference than you might think. Other than that, there's also the matter of the cord length; your particular balance is custom because it has an extra long cord. Using one of our standard balances means that the cord will yank out of place when you try to close your window.

It's my experience that standard balances cannot replace these. It's always ended in the stock balances breaking after a few weeks, or even days. Ultimately, though, it's up to you. I'll email you an order link for 2 and you can decide what you'd like to do from there.

We do not sell replacement cords and I do not know a company that does. It is highly recommended that customers do not attempt to try it themselves. These balances are under a lot of tension and if done improperly, the mechanism can get away from you and you could hurt yourself. It's easier and more cost effective to just replace the balance.

I don't have access to that information, unfortunately. I'm not sure I'll be able to get a hold of the exact numbers due to the quarantine. 

We usually always suggest sticking with what was installed in the window to begin with. If you want to try out our stock balances anyway, you're welcome to do so, but I want to stress that we don't recommend it. I've known many customers who have tried and I've known none who were successful. I just don't think they'll work.

That is not information I can get for you at this time, no. All I can tell you is that the custom balance I recommended will work for you. The stock balance, on the other hand, won't. Many many customers have tried and all have failed. 

It's simply not the right part. Even ignoring the the cord length, you also have to contend with the metal channel length, the style of the shoe, the position of the pulley wheel at the bottom, and countless other little differences in its construction. It's just not worth considering. They're two entirely different parts for two different windows. One is a match and the other isn't. You don't want the part that doesn't match and never works when you have access to the part that does match and always works.