Window sash

Hey there! Thanks for reaching out to us. The numbers printed on your balance aren't immediately familiar to me. Please allow me to consult our senior expert, we will reach out as soon as we have more information. 

Thank you for waiting while we looked into this. See the 24-13R. Since these are cottage windows where the top and bottom sash heights are different, you will need the 24-13L for the opposite side.