Pair of Restrictor Friction Window Hinge 16 20 24" Top Hung Securistyle Defender

Collections: Door Hinges



Pair of Restrictor Friction Window Hinge 16 20 24" Top Hung Securistyle Defender

For UPVC windows with the handle on the bottom. These hinges are available in 16, 20 and 24" and in 13 and 17mm stack height.

The Securistyle Restricted Defender friction hinge is suitable for restricting the opening on top hung windows. The restrictor can be disengaged, for safety this is a two handed operation.


  • Built-in quick release lever allows the window to be fully opened for easy cleaning, total ventilation

  • Extended enclosed end cap to enhance weather sealing

  • Tested to BS63575-2 to load bearing capacity of safety devices

  • Handed ‘profiled’ vent arm further enhancing weather seal

  • Restrictor automatically relocates and resets when the window is closed

  • Unique patented robust cam friction device eliminates any risk of friction screw misuse

  • Manufactured using high-grade Ferretic stainless steel

  • Supplied in pairs

  • Fixing screws are NOT supplied

  • 10 year guarantee

  • Slot hole slot format will provide the ability to adjust the vent easily

What's in the pack?

1 x Pair of Securistyle Defender Top Hung Restrictor Hinges


For all measurements, please see the technical diagram in the gallery.

Please note: The restricted opening gap is controlled by: A - The restricted opening angle shown (angle B), B - Window frame thickness and C - Vent Size. (Shown in gallery diagram).

How should I measure my hinges?

The first measurement is the actual length of the hinge. You will need to measure the part that fixes to the window frame (not sash). These hinges come in the following sizes: 16, 20 or 24 inches long.

The second measurement is the Stack Height, this measurement is the height of the hinge when closed, please see the picture in the gallery (measure the gap between frame and sash). Stack heights come in two sizes 13mm or 17mm.

The final measurement is that of the hinge width (that is the width of the metal part that fixes to the outer frame). Almost all window hinges will measure 18mm in width, however in windows that are very old the measurement could be 14mm and this hinge will not meet your requirements. Unfortunately as demand for this type of hinge is very low we are unable to stock them.