Window restrictor

For use on PVCu, timber or aluminium windows

Flex is a face mounted cable restrictor device suitable for doors and windows.

The Flex Restrictor can be fitted to all window sections and materials that are both inward and outward opening. Flex Restrictor has a dead lock operated using a key.

Features & Benefits

  • Fits all window types.
  • Push to release.
  • Key operated deadlock.
  • Highly visible.
  • Special lengths and colours to order.
  • Retro fit (surface mounted).
  • Tested to 1200N with no failure.

Click here to read a case study on the successful application of the Flex Restrictor.

Please note that it is the Duty-Holder's responsibility to specify the appropriate restrictor for each situation.

Flex open

Flex closed

Product  Code
Flex Restrictor 200mm FEN200

Manufactured From

Zinc castings. Steel cable & stainless steel bullet.

Recommended Screws

For timber - the longest & widest diameter possible depending on window section.

For PVCu - 4.8mm peel pop rivets stainless steel.

For aluminium: - no. 8 x 16 BZP, CSK self drilling.


Tested in accordance with DD CEN/TS 13126-5:2004 and BS 6375 Part 2:2004.


Available in the following finishes, suffix product code with -543 (Black), -544 (White).

Other finishes on request (will have black cable & screw covers).

More information / 01206 713801