Window Sash Balance
Hello there. I am confident we can replace this channel balance, but that stamp is not a part code. It tells us the balance's strength. If you could remove the balance and send us photos of the nylon attachments on both ends, we'll do our best to help. Many thanks.
Thanks for getting back to me. For the balances, start by comparing to either the S351-30 or S390-30. The only difference between these two channel balances is the depth of the bottom shoe, as shown below. Measure your old balance's shoe depth to see what matches best. For a stamp option choose 2940.
I am afraid we don't have an exact match for this Top Sash Guide. It reminds me a little of the 18-201, so please start by comparing and seeing if this matches what you need.
