Replace coil balances (Also known as constant force balances).

I am needing to replace some window coil balances (Also known as constant force balances).

I am enclosing a picture of the measurements of the coil balance that I made from one of the broken window's coil balances, I think the measurements that I have made are close but I was using a tape measure.

The complete windows themselves are 22 1/2' wide and 35" high, the windows have 2 sashes each, both sashes tilt in and are double paned, the bottom sash in the windows are 19" wide and 17" high, the upper sash in the windows are 19" wide and 16" high, each window has one screen.

The windows are aluminum and I do not know how much the sashes weigh, but looking at the printing on the coil balances I would guess they each weigh 4.5 to 9 pounds each.

On one end of the broken coil balance is printed #4..5 35" P and before that some of the printing is worn off but I can make out PA? ??32208 I think it was PAT 5232208 before the printing worn off but I am not sure. On the other end of the coil balance is printed #4.5 35" P 15:25 D14 SM5 28 MAR 11.

As you can see from my pictures the only thing broken is the coil balance, the pivot shoe and the coil support are fine.

I was looking at:

4.5 lbs Series 160 Coil Balance
Product Code: S160-4

or

4.5 lbs Titan Series 195 Coil Balance
Product Code: S195-4

but I do not know what the difference is between the two coil balances.

As I look at the pivot shoe in my pictures, it looks similar to your:
Titan Coil Balance Pivot Shoe
Product Code: 15-263

Thanks, since my post I have also measured my pivot shoe and I can see that although the Titan 15-263 pivot shoe does look very similar to my pivot shoe and even the keying holes looks similar, that pivot shoe is a different size from mine.

My pivot shoe is 1 1/4" Wide x 1 1/2" High x 1/2" Thick whereas the Titan 15-263 pivot shoe is 15/16" Wide x 1" High x 9/16" Thick.

The ends of both coil balances, the Series 160: S160-4 and also the Titan Series 195: S195-4, do look to be keyed alike, meaning that either coil balance will key into a similarly keyed pivot shoe despite the pivot shoes being of different sizes, is this correct?

I think you are correct, my pivot shoe seems very similar to the 15-228 which is 1 1/4 Wide x 1 1/2" High x 17/32 Thick, even from what I can see of the keyed holes in the on line pictures of it they seem to match and I may have been off a little with my thickness measurement of 1/2".

So it looks like I need the 4.5 lbs Series 160 Coil Balance Product Code: S160-4.

Thanks