The clips shown on this site are reproductions of the plastic grille clips (muntin bar clips) used in Andersen Narroline double hung Windows. These windows were manufactured in the 70's/80's. The original clips have been discontinued by the manufacturer and you cannot find them anywhere but here sold as near identical reproductions. These clips are designed to be perfect replacement for the original part but are made from a durable white nylon plastic that is both flexible and strong. Available only in white but you can spray paint these to match your window frame color.