S1383 Simplicity sewing pattern OS (ONE SIZE) s1383OS £7.25 Quantity: at £7.25 each Add To Basket 1 in stock. Change up your interiors with these window treatments for 36" to 40" wide windows. Views A & B are reversible. View C features twill tape and a scalloped hem. Views D & C have inverted pleats and contrast underlay.