Designed for use instead of conventional flip-lever operated flushbolts, the 1870 gives building management key control of the inactive leaf of paired doors. Prevents casual locking of the inactive leaf by children or other unauthorized persons. Uses same basic overcenter action mechanism as MS pivoted bolt locks. Recommended for installation at both top and bottom of inactive door with MS1850S inactive door for greatest security.

• Overall Case Size:
• 174.6mm x 31.7mm x 41.4mm - 24.6mm Backset (31?32")
• 174.6mm x 31.7mm x 45.2mm - 28.6mm Backset (1 1?8").
• Cylinder Height:
• 304.8mm (12") (Cylinder centreline to retracted bolt tip).
• ±31.75mm adjustment possible.
• Case: Steel with corrosion-resistant plating.
• Backset: 24.6mm, 28.6mm.
• Bolt:
• 9.5mm (flat to flat).
• Hexagonal, hardened steel.
• Bolt Throw: 17.5mm.
• Operation:
• 360º turn of key throws or retracts hardened hex-section bolt.
• Key only removable when bolt is in positively locked or unlocked position.
• Cylinder: Any standard 29.4mm (1 5?32") Mortice Cylinder or Thumbturn with MS® cam.
• Strike: 12.7mm diameter hole in metal threshold or header is suitable.
• Forend: Steel, with aluminium faceplate.
• Faceplate Shape: Flat
• Backset: 1-1/8"
• Handing: Non-Handed
• Finish: Clear Anodized