In looking closer at the slot of the window frame that the balance would fit into, it only measures 7/16 wide and the current plastic covering needs to be "squuezed" a bit in order for the balance to fit into place. Given this information, I think the 9/16 would be too wide. Are there any options to get the 7/16 with a plastic covering?
Unfortunately, the only spiral balance diameters available are 3/8" and 5/8" (actual 9/16"). Is there an undamaged balance you can measure? That may give you a more accurate dimension.
Our existing balances are 3/8" with a sleeve that brings the width to 5/8". The window slot these go into won't allow the solid metal balances to go into them since the current platic models had to be squeezed in the 1/2" window side slot.
So we are looking to get the 3/8" model at 29" with the blue tip. We could only find Red and Green check boxes on your website. Do you have the 3/8" x 29" x Blue Tip models in inventory?
We're lookig to buy 6 of these we need to make sure we get the right model.
We'll also need to get an inexpensive charging tool.
Thanks.
Thanks for getting back to us. For spiral balances with the plastic sleeve, we consider the diameter to include the sleeve. Our replacement balances just have a metal casing versus the cheaper balances with the plastic casing. I do not believe a 3/8" balance will work with you. It may be too weak, and could snap when you try to use it.
How much do you have to squeeze to get the balance into the jamb? Can you get them in there without squeezing? Is it possible that the original balances you have were not replaced correctly to begin with?