Holonite supplies stronger window sills such as type W, X, Y and Z for traditionally designed buildings. These window sills hollowed out on the underside are intended as a means of cutting down on materials. These window sills are also available without a hollowed-out section for a surcharge.
Window sills in window surrounds
Window sills, reveals and lintels are used as frame components. Window surrounds are available in many different sizes.