Prime-Line 12-1/2 in., Aluminum, Casement Track

This is a casement operator track that is riveted or screwed onto the bottom of a steel casement window. It fits the older style casement operators Prime-Line parts H 3500 through H 3523, and H 3581 through H 3588. The guide disc on the tip of the operator glides through the track to open or close the window.