Collection: Ingersoll FM68 Metal Fanlight Window Lock

The Ingersoll FM68 is a key-operated security lock specifically designed for metal fanlight windows (top-hinged windows) that use stay arms to control the opening position.

The lock body is fitted beneath the moveable stay arm and the Ingersoll key is used to slide the bolt beneath the stay retainer, therefore locking the stay arm in the closed position.  

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