Window Coil Spring Strap

Hi there. I believe when you say "strap", you are referring to the coil spring. Our Series 180 may be the replacement you need. Your spring should have a number stamped on it. We will need that number to be able to provide a part number. If there is not a part number on the spring, get back to us with the weight of your sash. 

Starting off with your sash weight, it's never a good idea to guess the weight. You want to be as exact as possible. As for some guidance on removing the coil spring system, see if the video below could help. It's not the exact coil system you have, but it may still provide some pointers on removing the part from the window.

The S180 coil does look like a good match but you'll want to remove the coils to confirm since you can only see part of the balance while it's installed. As for the weight, an S180-5 on each side of the window should do the trick. Thank you for contacting us.

Thank you for the additional photo, Craig. Your coil does look similar to our S180-5. As for the pivot shoe, the 15-087 looks like it will work. It's always best when replacing one side to replace the other side to increase the longevity of your replacement parts.