Alenco Window guide replacement

Question

I have Alenco windows in many of my duplex properties. I am having trouble with one unit where the windows are hard to open and close. Some won't stay up. Strings are visible from the balasts on the sides of the sash. These say 2730 on them. The duplex was built in approx. 1995.

Tom · Accepted Answer

Thanks for your photos. Based on what I see here, you have either our S351-28 or S390-28, depending on the depth of the bottom shoe. That's the only difference between them. I recommend measuring your shoe and referring to our dimensions to confirm the best match.

Comparison of the S351 and S390 balance shoes.