Weight Code

Thanks for posting. Unfortunately, the stamp option of 1720 is too weak for this window. Channel balance stamps indicate the weight of the overall sash, not just for half. So your sash is too heavy for the 1720 stamp option's weight range. You can see our Return Policy here. 

Now, our 1750 stamp option will support a sash that weighs through 20 pounds, but that still may be too weak for your 20.6 pound sash. If you want something more appropriate for your sash, it may need to be a custom order and would take some time to furbish for you. Let me know if you're interested and I can get back to you with a quote. Thanks.