Marvin Windows and Doors provides an easy transition between indoor and outdoor spaces with its Low Profile Sill for sliding patio and French doors. Creating a flush profile by being ¾-in. off the base flooring, the low profile is ADA-compliant. The sill is made from Ultrex, a pultruded fiberglass and has an interior oak liner. It can be ordered will all current products and design options for French and sliding patio doors.