x 5/8 in.
The balance number will be stamped or printed on the metal channel which determines the spring tension. This balance channel width is 9/16 in.Aluminum metal channel for strengthDesigned for longer life when you change balances on both sides of the sashProvides smoother operation when you change balances on both sides of the sashFor cross eastern, penco, miller, Remington and other brands of windows D.