Extended-Travel Channel Balances

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 combination of end attachments. You mentioned that one balance is stamped with 27 4 and the other with 27 3. If these balances are from the same window, that indicates that someone may have replaced one of the balances with the incorrect strength option at one point since both stamps should be the same. If so, we would need to know the exact weight of your window sash to determine the strength option needed for your replacement balances. Thank you! 

The 27-3 stamp balances would be calibrated to support a window sash between 12-18 pounds, while the 27-4 balances would support an 18-25 pound sash. Since these balances would be custom ordered for you and will not be able to be returned for a refund if they are the incorrect strength, I would strongly recommend confirming your exact sash weight before placing an order. We'll also need to confirm the number of balances that you need, with the minimum being two.