HD16 D Window Balance

Thanks for posting. Can you show us some clearer pictures of the balance out of the window? We need to see the clip that attaches to the pivot shoe, as well as the pivot shoe itself removed from the window. From there, we'll see what we can identify for you. Many thanks.

Perhaps I can be of assistance. Thanks for the photos. Hopefully the metal die-cast tilt shoes you have are all intact, because I am afraid they are no longer available. You seem to to be handy, so we can supply the ribbed channel balances: our Series 751. You would need to switch the nylon shoes that come with these balances with yours. Service technicians use a vise to hold the balance channel, pull the shoe about five inches,lock the cord with locking pliers and switch the shoes. For the 17" balance use our S751-17 with a spring weight 16HD. Now, the 25" balance is our S751-25. Your stamp option 24HD that is for a sash weighing between 18 through 22 lbs. Weigh your sash to see if the weight falls in this category, if not there is a 24TG for sash weighing 22 through 30 lbs.

Hm, did you ever have trouble closing the window before this, or did it slide open on you? 16HD is for a window sash in the weight range of 17 through 22 lbs, so its possible that those balance's spring calibration was a bit too strong for your window. If the smaller sash weighs exactly 15 lbs, 16R is the better option (10 through 17 lbs). Let me know what you think. 

Ah, thanks for clarifying. A S751-25 with a stamp option of 24HD is meant to support a window sash in the weight range of 18 through 22 lbs. I am afraid I do think this would be too strong for your window sash--in hindsight this is possibly why the window was sliding down, rather than compromised springs! Now I'm afraid your order has already shipped, as our warehouse has a very quick turnaround time--but fortunately you can view our Return Policy for the incorrect balances here. The correct balances you would need are the S751-25 with a stamp option of 24R, which is for a window sash in the weight range of 10 through 18 lbs. These should work a lot better for your upper sash. Let me know if you have any other questions!