The 9/16 x1/2 Inverted tilt-in window balance with plastic end attachment. Channel type balance travels with the window sash. The plastic attachment at the end of the balance fits into 6250014 pivot lock brake shoe. 
Used by Alliance, Atrium and other vinyl windows companies
 

Custom inverted  Channel Balance with clip for single and double hung windows.    
Channel Balance Width: 9/16 inch    
Channel Balance Depth: 1/2 inch   
Lengths: 10 to 45 inches   
Weight Codes: A to F, some had numbers 10 to 60   
Color: White   
Sold as balance rod with 6250013 attached - 6250014 NOT included   
Use the following drop down menus to place your order.   

1. Length of Metal Channel (inches)   
Measure just the metal portion of the channel, do not include the ends, should be on the 3/8"   

2. Weight Code - After the call size is the weight code, in the form of a letter, sometimes a number   
Your balance may be marked with two numbers, such as 2420, or it may also be marked with just one number and letter, such as a, b, c, d, e, f, g, h or 1, 2, 3, 4, 5, etc. see example   

If Not sure what you need please contact our office.   

Please include, any number or letters on Channel Balance.   

Article: REPLACING A CHANNEL BALANCE IN AN ALUMINUM OR VINYL WINDOW    
Video: HOW TO REPLACE A CHANNEL BALANCE   

Priced and sold each.