Heavy-duty 14 gauge steel, polyurethane-filled for energy efficiency. E glass, tempered, sealed, and weatherstripped to prevent leakage. Glass panels can be opened independently from the doors. Door thresholds prevent water infiltration. All doors use barrel hinges, and double doors include a pre-insulated flush bolt system. We can make any design hurricane resistant. Door size : 37 1/4" X 81" with 6" jamb. Door glass is rain glass. Double bore both with flush both.