Andersen window sash balances

Question

I have four very large windows with sash balance numbers:
P24 12SL 381
P23 12SR 481

The P24 came out easier than the P23, so maybe 1 had bee replaced?
Can you provide replacement units?

Tom · Accepted Answer

Hello! Thanks for contacting us. Based on your old stamps of "12SL" and "12SR," my respective recommendations would be our 24-13L and 24-13R Andersen brand sash balances.

Please let me know if you had any questions! We're always here to help.