what's the size of a standard door
Dimensions of a Standard Door. In the U.S., the standard door size is 36 inches by 80 inches or 0.91 meter by 2.03 meters. In some areas, the usual door size is 1.2 meters by 2.1 meters, which is widely used in comfort rooms, bedrooms as well as in main entries. The width of doors is 0.8 meters or more, depending on the purpose.