PGT window channel balance

Thanks for contacting SWISCO. This looks like our S395-30. You will need to select a stamp option; however the stamp code 29 9 on your metal channel is for an older rating system no longer in use. To figure out what stamp option you should select, you need to weigh your window sash. That precise weight should fit in with one of the weight ranges listed under the product description. Select the stamp option corresponding to that weight range.