Series 351

Thanks for your post! I'll need to see photos of the top and bottom attachments to determine if the Series 351 is the correct replacement. You'll also need to remove the balance and measure the channel to determine if you'll need a 38" or a 39" balance.

Since the balance appears to be jammed in the window, it is also likely you'll need to replace the top sash guide. Take a look over the video tutorials, tagged below, for instructions on removing/installing the balances.