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
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Primary Lock – Standard 89mm Backset — 4770SS
-
Primary Lock – Including Latching Adaptor — 4770TSS
-
Primary Lock – Full Radius End Face Plate — 4770RSS
Product Information
Product Information
Shipping & Returns
Shipping & Returns
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
