The Series 730 is not recommended, it is normally used in windows manufactured by Silverline.
Alenco commonly uses a combination of 15-001
. The photo of the balance shoe is not good enough for us to determine if the 15-001 is the needed base fitting, just compare the original balance attachments to the measures shown on our site for these attachments before placing an order.
The following is a custom balance ordering form to get you started:
Balance with 15-001 and 19-005 Attached