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4770MkII Nightlatch – Primary Lock – 89mm Backset Variants

4770MkII Nightlatch – Primary Lock – 89mm Backset Variants

4770MkII Nightlatch – Primary Lock

A heavy-duty cylinder mortice lock suitable for industrial, commercial, and institutional buildings, providing secure key-operated and turnknob functionality. Automatically latches when the door is closed and supports robust through-fixing of door furniture.

Features

  • Cylinder mortice lock for heavy-duty applications

  • Operated by key outside and turnknob or key inside

  • Automatic latching when door closes

  • Supports through-fixing of rose furniture, turnknobs, and escutcheons for durability

  • Ideal for industrial, commercial, institutional, and high-traffic buildings

Variants

  • Primary Lock – Standard 89mm Backset — 4770SS

  • Primary Lock – Including Latching Adaptor — 4770TSS

  • Primary Lock – Full Radius End Face Plate — 4770RSS

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From $192.16
4770MkII Nightlatch – Primary Lock – 89mm Backset Variants—
$192.16

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Description

4770MkII Nightlatch – Primary Lock

A heavy-duty cylinder mortice lock suitable for industrial, commercial, and institutional buildings, providing secure key-operated and turnknob functionality. Automatically latches when the door is closed and supports robust through-fixing of door furniture.

Features

  • Cylinder mortice lock for heavy-duty applications

  • Operated by key outside and turnknob or key inside

  • Automatic latching when door closes

  • Supports through-fixing of rose furniture, turnknobs, and escutcheons for durability

  • Ideal for industrial, commercial, institutional, and high-traffic buildings

Variants

  • Primary Lock – Standard 89mm Backset — 4770SS

  • Primary Lock – Including Latching Adaptor — 4770TSS

  • Primary Lock – Full Radius End Face Plate — 4770RSS

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4770MkII Nightlatch – Primary Lock – 89mm Backset Variants | AMS Doors, Timber & Hardware