Alco Tilt windows

Question

Hello,

I have Alcoa tilt windows and would like to make sure I'm ordering the correct replacement spiral spring. Attached are some pictures. i need to know where to measure the spring. i think i have a 3/8 diameter and length is 35 inch. any help would be appreciated.

User submitted photos of a window balance.

Paul · Accepted Answer

Thanks for contacting us. Based on your information, I would recommend our S600-34 spiral balance. It looks like the screw plug broke. I wonder if this is because you have a Black Tip; Black Tips indicate an especially strong spring. You may want to weigh your sash on a scale to confirm that this is the proper strength rating.

See our 26-200 screw plug and 33-016 screw. These should work for you. The damaged hole for the screw plug might be too broken to hold the 26-200, in which case we'd recommend a #8 x 1-1/2" (or longer) screw to secure the balance through the vinyl frame and into the wood framing behind it.