You can see the bore hole that is 2 1 8 in diameter.
Door handle parts terminology.
Bottom rail the bottom portion of the door.
The door prep image seen to the left applies to any standard tubular lock or latch set including interior door knobs door levers deadbolts entry door handle set and door handle plates.
The backset is the distance from the edge of the door to the center line of the prepared cross bore hole drilled to install most locks.
It is the door adjacent to the main door in the system.
Beyond parts there are a few more terms you might find helpful when it comes to purchasing and installing your door hardware.
A strip of steel or wood which covers or closes the gap between the edges of a pair of doors some types overlap others meet at the center line of the gap.
Door hardware parts terminology active inactive door panel referring to french door and hinged patio door systems.
Inactive door is fixed while the active panel moves open and close.
This post has two door hardware terms that are good to know.
Other door hardware terms.
Metal stripping which is soldered at the joints used between cut glass pieces to assemble the pieces into a decorative glass panel.
Mortise plate the plate on the edge of the latch mechanism that provides additional security and a nicer cleaner look.
The leaf of a pair of doors double doors that opens first and has the locking or latching device the other door is called the inactive door and opens when flush bolts or surface bolts are released.