Safety Glass

A glass that is designed to reduce the risk of injury when broken.

Secondary Glazing

An additional layer(s) of glazing fixed to an existing window to produce a thermal/acoustic break. This is not double glazing.


Shootbolts are used on multi-point locks to further secure the door into head and sill of the frame by an upwards movement of the sprung handle

Side Hung Window Hinges/Stays

Outward opening sashes where there is no requirement for an easy clean facility.

Snap In Door Hinge (for doors)

A symmetrical hinge used on internal light doors in either residential or commercial applications.


A button or slider on a nightlatch that enables the latch to be “held back”, preventing the door from accidentally slamming shut.


The spindle is a square metal bar which connects the door handles on either side of your door together through the follower.  When the levers of your door handles are pressed, the spindle rotates and operates the latch inside the door, allowing the door to open.

Tempered Glass

A type safety glass that has undergone a heat treatment process in order to increase its strength. Also known as toughened glass.

Thumbturn Cylinder

A knob fitted to one end of a cylinder which allows the door to be unlocked without a key from one side only

Tilt & Turn Window Hinges/Stays

The tilt & turn window are typically used where it would not be possible or advisable to open windows outwards, e.g. pathway or street, or where external shutters are fitted.

Top Hung Window Hinges/Stays

For outward opening sashes in situations where glass may be easily cleaned from the outside of the building. The unobtrusive flush fitting hinges allow the sash to be disengaged and removed when it’s opened to the horizontal position.


The United Kingdom Accreditation Service is the sole national accreditation body recognised by government to assess, against internationally agreed standards, organisations that provide certification, testing, inspection and calibration services.

Yale have a UKAS accredited test house in which many of their products are tested to the required standards.