The block and tackle balance is itched as 36D

Hello,

We'd be happy to look into this for you but we would need to see the original balance fully removed from the window, including the end attachments, pulley clip, and any numbers etched on the metal channel, to compare to our inventory. Thank you! 

Thanks for getting back to us. Take a look and compare the specifications of the S795-30 (30E) balance, which comes with the 1-1/4" wide 15-195 t-lock shoe and a screw tab at the end of the pulley cord for installation, to your assembly.

As for your longer balance, the 36D stamp that you mentioned in your original post indicates that you would need the S795-36 with a 36D option to support a sash between 27-32 lbs. If your sash weighs exactly 44 Ibs, we should still be able to help but those balances would need to be custom ordered. To move forward, please confirm that 44 Ibs. is your exact sash weight and show us a detailed photo of the clip at the end of your pulley cord to confirm the correct replacement. 

Great, we just sent over an order link and price quote for the balances you've requested. Please note that they will have 36i stamped on them instead of 36H, which is the strength option needed to support a sash between 43-45 Ibs. Take a look and let us know if you need anything else. Thank you!