Part for aluminum single hung window

Thanks for posting. It looks like you need new channel balances. It appears the metal channel, not including the nylon fittings at either end, is 22" long. Is that correct? If so, you likely need either our S351-22 or S390-22. The chief difference between these two balances is the depth of the bottom nylon shoe, or the 'heel-to-toe' measurement. Compare both with your old hardware to see what matches best--see the diagram below for reference.

Comparison of the S351 and S390 balance shoes.

You'll then have to choose a stamp option, which designates the strength of the balance. There should be a stamp on your old balance that indicates what option to choose. If there is none or you are uncertain, obtain the exact weight of the window sash the balances support. You can then match that precise weight with one of the weight ranges listed alongside each stamp option under the product description of the S351-22 or S390-22 product page. 

Great! That would be our S390-22 with a 2110 stamp option. All orders can be placed directly on our site at your convenience. 

You're very welcome. We appreciate the order, too, thank you! Please don't hesitate to reach out if you had any further questions.