Shop for Doors & Windows at The Home Depot. The Grisham 401 Series Mariposa 36 in. x 80 in. Steel White Prehung Security Door combines sturdy 1 in. x 2 in. welded-steel frame construction with a decorative design to grace your entryway. It is Prehung for convenience and features reversible hinges to allow flexible installation options. This securit..