• Click for email Support
  • Visit our Knowledge Centre
  • Free Std Delivery over £42

R03 Window Restrictor

Price From: £5.32 Exc Vat £6.38 Inc Vat

In stock

  • Window restrictor. 

  • Fits uPVC and some timber windows.
  • Available in a 6 inch (150mm) or 10 inch (250mm) length.
  • Just fit inline with the hinges on either top hung or side hung windows. 
  • Non-handed single unit and a kit of parts for frame adjustment.
  • Supplied with instructions and fixing screws for uPVC.
  • Key-release window restrictor available.
  • How to improve window safety guide.
whats this

* Required Fields

6.5 6.38



Window Restrictor (R03) - General Details



A fixed position window restrictor that allows a ventilation gap of approximately 100mm (6inch restrictor) and 150mm (10inch restrictor). The restrictor can only be released by removing the fixing screws. With the restrictor concealed between the frames there are no unsightly attachments to be seen on the main window surfaces. Can be used on aluminium, PVC or timber windows with a gap greater than 13mm between the frames. Do not use this restrictor if the window can be used as a fire-escape route. The gap of 13mm is the same size as a normal window stay found on a typical double glazed window.


Window Restrictor Technical Information


  • Arm length between pivot points is 100mm and 175mm for the 6 inch and 10 inch window restrictors respectively.
  • The R03 window restrictor can be positioned to various opening gap sizes dependent on the positioning within the window rebate.
  • The R03 can be adjusted to provide a rigid window stay position to an open window when the small screw is tightened.
  • Stainless steel and Zinc Alloy construction.
  • Where windows are present with the handle at the bottom then it is recommended to use two restrictors to ensure a strong enough brace of the window at the corners where safety is important.
  • Restrictors are universal to open both left and right handing.

2nd Jan 2019: We are dispatching as normal following the Festive Season.

If you have received your tracking number via email from Hermes you can check the status here.

If you want to find a Hermes parcel shop use this link here.

* UK deliveries over 15kg in weight will be delivered by DPD.

** Does not include weekend or Bank Holiday delivery days.

Delivery Charges Hermes and DPDHermes TrackingHermes Parcelshops


The following special offer is available to you when you buy the R03 Window Restrictors. The discount for the special offer will show in the cart if both the R03 Window Restrictors and the special offer product are added.

Write Your Own Review

You're reviewing: R03 Window Restrictor

How do you rate this product? *

1 1 star
2 2 star
3 3 star
4 4 star
5 5 star