31 9 channel balance

Hello,

We can supply your replacement balances but it will need to be a custom order due to the length, extended travel pulley system and unique end attachments. To confirm the correct replacement, we'll need to see the fitting attached to the opposite end of the metal channel. We'll also need to confirm the number of balances that you need, with the minimum being two. Thank you. 

Thanks for getting back to us. Unforutnately, your photos do not show the top fitting attached to the metal balance channel, which we would still need to see, but your top sash guide resembles 18-008H. If any of your top sash guides are damaged, that could be why your balances are not staying in place. 

Dimenisons for 18-008H

Alternate view of 18-008H

The space on the sides of the sash does not look unusual to me but you could check a functional window in the house to confirm if it uses the same type of balance assembly. Take a look at the videos related on this page to assist you.

We can supply the balances shown in your photo but we have no way of determining if they are the balances intended for your window if you suspect that someone may have installed the incorrect replacements at some point. We specialize in recommending replacement parts based on the hardware that was there originally. If you have any reservations, you could try reaching out to the window manufacturer to see if they have a record of the exact balances originally used in your window. 

Also, the 31-9 stamp for these balances is calibrated to support a sash between 33-36 lbs. If you need them calibrated to support exactly 40 pounds, we'll need a bit more time to have them quoted for you. Just let us know how you would like to proceed and we can go from there.