For the park, see Washington Square (Philadelphia). Washington Square West is a neighborhood in downtown, or Center City, Philadelphia, Pennsylvania.
Electric Door Strike (image from bigasterisk.com) A better solution for door security hardware during a power outage is to use electric strikes. An electric strike is a mechanically operated strike that releases a door when the mechanical part is activated.
A metal plate affixed to a door jamb with a hole or holes for the bolt of the door. The strikeplate latches to the strike when engaged. An energy-efficient and weather-resistant weatherstripping system at the bottom of the door that forms a seal against air and water infiltration between the door and the sill.