Window with Coil Balance Won't Stay Open

Thanks for writing in. I can't be certain without seeing the shoe out of the window, but I believe you might have our 15-228. You'll have to remove the pivot shoe and compare to confirm. The identity of the pivot shoe determines the identity of the coil springs used.

Our 15-228 uses either our Series 160 1/2" wide springs, or our Series 165 3/8" wide springs. You'll have to remove your existing coil spring from the window and compare its width to see which Series you need. Look for a stamp code on the spring tape that indicates what spring weight you need. If there is none, or you are uncertain, give us the exact weight of your window sash, and we'll work out what you need. 

Yes, it's best to replace balances on both sides of the window, because otherwise the new balance will wear down faster when being used with an older counterpart. All orders can be placed online through our shop page. When you find a part you want, simply click "Add to Cart," and then click "Checkout" at the top right hand corner of the screen. Don't forget to set the quantity! 

It was my pleasure. Please let me know if you had any other questions!