These locks have a catch on the door frame and a main locking assembly on the door much like a barrel bolt but use a chain to lock the door.
Top and bottom door locks.
Door locks are designed primarily for functionality but in addition to providing security their appearance is a consideration.
Some people choose to install one at the top of the door and another at the bottom for extra safety.
Chain locks are ones you usually see on the inside of hotel doors.
3 point lock 44 45 47 48.
Top and bottom key operated lock.
The top and bottom backsets are passive until the deadbolt is engaged.
Designed for security the 3 point mortise lock is the perfect solution for 8 ft doors.
Door reinforcement lock 3 security door lock for kids home child proof door locks withstand 800 lbs for inward swinging door easy to install.
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This is the most basic patio door lock.
It offers greater security to basic key operated locks.
The top and bottom locks help to stabilize these oversized doors from warping and give a better weather sealing performance.
Look at pictures of different door lock types to find models that match your style.
The top countries of suppliers are china hong kong s a r and taiwan china from which the percentage of top and bottom door locks supply is 93 1 and 1 respectively.
The home depot delivers online orders when and where you need them.
Central rail key operated lock.