Balances for a Imperial 5000 HS single hung window

Thanks for sharing your photos with us. Have a look at our S351-19 channel balance. This comes assembled with a 19-002 balance top and 15-002 bottom balance shoe. You will need to compare your nylon fittings with ours to determine whether or not this is a a good match. The stamping on your balance is barely visible, but from what I can see, it looks like it may read "18 4". That tells us you can go with the 1840 option that holds up a sash weighing 14-17 pounds. Review everything mentioned and let us know if any other questions come up.