Exterior doors, by definition, are the doors to enter or leave a building. Due to the new law enforcement in New York City, every entry door — exterior door also needs to incorporate a self-closing mechanism. However, most spring hinges are not designed to use on these doorways.
On the other hand, Waterson Closer Hinges can be installed both indoors and outdoors. Made by stainless steel material, they can readily resist harsh environments and perform auto door closing features consistently.