Replacement window valancer

Thanks for writing in. This looks like either a S380-33 or S385-33. The only difference between these two balances is the 'depth' of the bottom nylon shoe, so compare both with your old hardware to see what matches best. Your stamp option of 2290 is from an older rating system we don't use. To know what stamp option to pick, weigh your window sash. You can then match that exact weight with one of the weight ranges listed alongside each stamp options listed on the product page.