Patriot Continental 2800 Sash is 37.5" long
A contractor from Fredericksburg, Va. says:
May 27, 2015
I have three lower sashes this size that need both balances, and one lower sash that is 6" shorter. I may need your device to spread the vinyl window slot that the shoe rides in. The picture is not very good.
Paul from SWISCO responded:
May 28, 2015
This model Patriot window has been known to use our Series 600 spiral balances in the past. This has a 5/8" diameter tube, so check that to confirm. Also make sure to measure the length of the balance tube and check the color of the nylon bearing.
Also keep in mind that your balances still may be functional. They might just be needing a charge. check out the guide below to see how you can do this. 15-046 shoe. This is 1-1/4" wide and 1/2" thick. You will need to confirm those dimensions, as well. For removal, Patriot should have made a cut out at the top of the window track for the bottom sash. Check behind the nylon window stop for a cut out.