A classic 1-panel design complements the full-length window in the JELD-WEN 36 in. x 80 in. White Prehung Right-Hand Premium 1-Lite Entry Door. Dual-pane glass lets light into any entryway and is insulated for energy and money savings throughout the year. The galvanized steel surface resists corrosion and rot, and weather stripping keeps the elements at bay. The 1-piece design of the polystyrene core ensures reliable insulation.