SWISCO - The Replacement Hardware Authority

sash balance

A quick learner from Columbia, MO says:
Hi! I needed a 28 inch sash balance but the stamped number on my window says 28B. I weighed the sash and it is 18 pounds. Which sash balance should I order?
Profile picture of Donna
Donna from SWISCO responded:
Hi! For the Series 750 you will need 2 of the S750-28 with stamp 27R.
A pair with option 27R will carry a window sash weight range of 10 through and including 19 pounds.

This information is based on 2 balances per sash. Balances are designed assuming friction in the jamb weather-strip will carry a portion of the sash weight. Suggested sash weights are approximate.
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)