FGTI by Winkhaus is a high security locking system designed for double doors with a dummy mullion and is suitable for timber, aluminium and PVCu double doors.

Product Information

Durable and secure
The master lock options consists of two high tensile steel hooks, latch and deadbolt. Through the lever operation, the 25mm throw hooks help counter bow and twist and aid the easy operation of the locking system. What’s more, the FGTI features shootbolts on both the slave and master door.


A flexible locking system
FGTI is a flexible but durable locking system that allows a range of adjustments to be made including centre latch striking plate adjustment to prevent door edge damage, locking point compression adjustment and fully adjustable shootbolt keeps.

Secured by Design
FGTI has been tested to PAS24, the enhanced security performance standard and is approved by the Police ‘Secured by Design’ initiative.

Further benefits

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Made in Germany – precision engineering

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Manufactured using high quality materials

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Available in a wide range of variants

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Proven long term reliability

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Very high corrosion resistance

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All Winkhaus door locking systems are thoroughly tested to the latest standards


Brochure FGTI Double Door



Get in touch!

For further detailed technical information about our products, please get in touch with us and we will be happy to help.

Türverriegelung mechanisch Tür offen mit Garten