Block and Tackle Sash Balance

Question

I have a broken Block and Tackle Sash Balance. I have Philips Stayton Windows in my condo which were manufactured in 2007. I attached a photo of the balance for the working window however the broken second window I'm not sure I can get back in place again if I take it out. I measured the Block and Tackle Sash from just below the top plastic (starting where the metal is to the bottom of the metal and it is roughly 30"). I'm not sure precisely which Block and Tackle Sash I should purchase as a replacement. The two windows are side by side and exactly the same size.

Near the name of the windows it says it's E2190 CBA 1242 before the date of manufacturing. I'd like to purchase 4 of the Block and Tackle Sash's since they seem prone to some damage. I measured the windows the width 30.375 x height 29.25" (I measured just the window here inside the frame so I assume it extends a little under the frame).

What size should I purchase? Can you help me out and do you have the parts?

Bob · Accepted Answer

Thanks for writing in. I'm afraid that stamp code only tells us the strength of the spring inside the balance. To know the identity, or what we call the Series, we need to see it out of the window, with photos of the nylon fittings on either end of the balance. From there, we should be able to narrow down what you need.