Hello Windy, and thank you for your recent inquiry regarding this item from Prime-Line Products. It would be nice if there were just one designated channel balance that would fit your 28” sash, but there are actually a variety of specifications that must be matched correctly to ensure the right balance is ordered and installed for optimal performance of your window. Feel free to contact an associate in the window and door department (Millworks Dept.) of your local Home Depot for guidance on how to order the correct channel balance, or you may also call in to the Prime-Line Products Customer Service department at (800) 649-9740, or by email at email@example.com. You can also visit us at www.primeline.net where you can view and print our channel balance ordering instructions by following these simple steps:
1. Go to www.primeline.net
2. Enter model # FA 1210 in the search window and press enter.
3. Click on [Installation Instructions] at the bottom of the screen.
4. Review the 6 pages and familiarize yourself with the components and required specifications.
5. Use these tools and info to take to your local Home Depot, or to call in to Prime-Line Products where we will be happy to assist you with conquering your Channel Balance replacement project.