Can you supply this Custom S880-35

Thanks for reaching out to us. I'd be happy to help you with these balances, but if your tube is 44-1/2" long then the 35-75 stamp you've supplied is no good. That's unfortunately not relevant to this size. We'll need to know what the stamp on this particular model is so that we can proceed; if there is no stamp, we will instead need to know the exact weight of the sash. 

Once I know that, we can get the ball rolling on a custom order.

Thanks for verifying. We can absolutely make a 44-1/2" hybrid balance that can support 80 pounds, so that shouldn't be any problem at all. I'll go ahead and email you a purchase link and price quote that will let you add 6 of these to your cart. You may then checkout as normal.

Please feel free to reach out if you wanted to make any changes, or if you had any follow up questions in general.