Zinc die-cast case, steel base internal components with zinc plated finish.                                
* Double cylinders, single cylinder and self-locking performance.                                
* Good guard against theft, high security.                                
Features                                
   Handing                                
* Fully reversible for left or right hand doors.                                
    Door Thickness                                
* 1-3/8"2-3/16"(35mm-55mm).                                
  Backset                                
* 2-3/8"(60mm)
   Strike
* Angle strike as standard for doors opening inward.
* Flat strike available for doors opening outward, though such opening is not recommended.
Single cylinder deadlock, key and inside knob operate latch, protected with an anti-picking slide gate.
Double cylinder deadlock, operated by key from both outside and inside.
   Introduction
* 564D/564 are of bevel latch structure.
* Outer case and inner components of 558 are made of steel material.
* Outer case of 564D/564 is made of zinc die-cast. Inner structure is made of zinc-plated steel.
* zinc die-cast night latch is an economical security product, suitable for installation on exterior wood doors.
Rim deadbolt, with the security of 1"(25mm) full throw deadbolt.
Features
   Handing
* Fully reversible for left or right hand doors.
* 564 Can also be installed  on outward opening doors.
  Door Thickness
* 1-3/8"2-3/16"(35mm-55mm) is supplied as standard, lock suitable for 30mm-60mm door thickness is also available upon require.
   Backset
* 2-3/8"(60mm).
Night latch of 1/2"(13mm) latch extension, with inside deadlocking button preventing any key operation and latch picking from outside.