Most of the current locks require the standard 2 1 8 bore.
Starndard size door handles.
Next you need to determine which direction the door opens in out left right swings.
The recommended thickness for that door would be 1 3 4 inches.
Then you need to measure the width most common width are 2 6.
Entry doors are usually 36 inches wide.
In most cases the door set which is inside of the door and controls the door latch will.
Require no door prep.
First doors can usually be re drilled.
Fortunately the standards for ada door handle height are not much different than traditional recommendations.
The standard size for an exterior door is 80 inches 6 feet 8 inches by 36 inches 3 feet.
For standard size cabinetry dimensions of 12 36 the most common pull sizes are 3 4 96mm and 128mm center to center from one screw hole to another.
Most doors are 2 3 8 backset but some mostly exterior doors have a 2 3 4 backset.
Standard thickness for an interior door is 1 3 8 if your door exceeds 36 or is over 90 in height.
Measure from the center of the door knob hole to the edge of the doorway to find the size of the door set.
While many door knob manufacturers ship their hardware with an adjustable backset some do not.
While a door width of 36 inches is oversized for an interior door it s the standard size for front doors the standard height remains the same however.
Dummy handles are surface mounted and may be located anywhere on the door you choose but they re usually located to match the appearance of nearby operating locks.
If one wants to replace their locks on doors that have smaller diameter holes there are 2 options.
The height of the door handle is not so much the problem as the door handle itself.
All handles pulls latches locks and other operable parts of the door should measure between 34 inches and 48 inches above the floor.
The minimum recommended door width to allow persons with disabilities to pass through is 36 inches.
The standard bore is 2 1 8.
You may be asked for this information when ordering.
Knobs typically have one hole for installation and can be round square rectangular or a t bar.
The standard backset is 2 3 8 or 2 3 4.
Standard knob sizes are 1 1 4 or 1 3 8.
