A latch is a mechanism which holds a door closed using a sprung bevelled metal tongue. The tongue retracts or protrudes with the turn of the lever or doorknob. A latch is operated by a door handle or doorknob with a spindle. The latch keeps the door closed and when the handle or knob is turned, the latch allows the door to open. The shape of the case can be tubular or flat. Tubular latches are more common as it is considered easier to fit. Latch Face Plate Kit are available for replacement latches.
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