Locks used only for security purposes and not used for normal opera tion are permitted at any height.
Front door lock height standard.
Door handles pulls latches locks and other operating devices shall be installed 34 inches 864 mm minimum and 48 inches 1219 mm maximum above the finished floor.
Most of the current locks require the standard 2 1 8 bore.
If you have more that 5 1 2 inches here you can still use a sectional handleset on your door.
Standard interior slab doors are 80 inches tall.
Door handles pulls latches locks and other operating devices shall be installed 34 inches 864 mm minimum and 48 inches 1219 mm maximum above the finished floor.
The standard bore is 2 1 8.
Is now very common for newer homes and stock exterior doors are also commonly available in 30 and 32 inch widths.
If one wants to replace their locks on doors that have smaller diameter holes there are 2 options.
If you re installing several doors it s acceptable to drill the doorknob hole at 40 inches or centered vertically.
The height of the door handle is not so much the problem as the door handle itself.
Installation at 40 inches is common on affordable homes mobile homes and production homes.
The standard size for an exterior door is 80 inches by 36 inches which is 6 ft 8 inches by 3 ft.
Some door manufacturers sell doors in 7ft 8ft heights and door widths from 24 inches to 42 inches.
The standard residential door prep for entry doors is two 2 1 8 bore holes 5 1 2 center to center.
Door handles pulls latches locks and other operating devices shall be installed 34 inches 864 mm minimum and 48 inches 1219 mm maximum above the finished floor.
The additional room allows for a 3 4 inch top jamb a shim.
The height of common doors is 6 feet 8 inches.
Fortunately the standards for ada door handle height are not much different than traditional recommendations.
96 inches or 8 ft.
Locks used only for security purposes and not used for normal operation are permitted at any height.
The standard height of the rough opening for a door is the door height plus 2 5 8 inches.
Many older doors had bores that were been smaller.
See measurement b in the image to the right.
Sectional handlesets have a seperate deadbolt body so the b measurement is actually variable.