Measure from the center of the door knob hole to the edge of the doorway to find the size of the door set.
Standard size for exterior door handle.
In most cases the door set which is inside of the door and controls the door latch.
This makes the changing of exterior door handles easy enough for most people to do.
Stock exterior doors are also commonly available in 30 inch and 32 inch widths.
Measure your existing door knobs from the floor up.
The standard size for an exterior door is 80 inches by 36 inches which is 6 ft 8 inches by 3 ft.
This creates a more harmonious appearance.
96 inches or 8 ft.
Some door manufacturers sell doors in 7ft 8ft heights and door widths from 24 inches to 42 inches.
Standard door handle height.
Is now very common for newer homes and stock exterior doors are also commonly available in 30 and 32 inch widths.
This is around waist height for the average adult.
General requirements for access recommends that the height of the handle should fall within 900mm and 1100mm above the floor.
Some door manufacturers carry stock doors in 7 foot and 8 foot heights and door widths from 24 inches to 42 inches.
In metric terms this size is 57mm.
It is more important that your door handles be consistent than that they match the standard door handle height.
The standard door thickness is 1 inches.
Over the years front door handles for wooden doors have tended to keep to a standard lever to lock size.
Regardless of the size of the door the australian standard as 1428 1 design for access and mobility part 1.