Hi Tom,
Thank you for your reply.
The balances are from the same sash window.
The glass in the window is chicken-wired, I guess it will be a bit heavy. The window is about 28" wide by 20" tall, weighted maybe, I guess, 30 lbs the most?
The bottom guide measured 1-2/16" deep.
The shaft of the balance is .5 in wide and deep.
The opening of the shaft ,where the spring seating, is 5/8 of an inch.
Thanks for your help.
Ken
Thanks, Tom.
I'll check the weight of the sash again before I select the option.
Ken