TSS British Standard BS3621:2007 5 Lever Mortice Deadlock. Available in brass, satin chrome and chrome finishes. The case itself has an Anti-Drill hardened plate, which makes it robust and provides additional protection against attack. The deadbolt features hardened anti-saw rollers to provide a higher level of security. Supplied with 3 keys and two keyhole escutcheons, one with a cover and one plain, for convenience and value.
 
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Specifications
Faceplate: 126 x 25mm.
Backset: 45/57mm.
Case height: 88mm.
Case depth: 68mm (2.5) or 81mm (3).
Bolt throw: 20mm.
Case thickness: 14mm.
Supplied with 3 keys.