VELUX Opening Restrictor ZOZ 010K | Centre-Pivot Safety Catch

VELUX Authorised Dealer

Up to 30% Off & Free Shipping

Step 1 โ€“ Open Your VELUX Window

Gently open your roof window so you can access the top edge of the sash (the moving part of the window).

The identification plate is not visible when the window is closed, so you will need to open it slightly to locate it.

Step 2 โ€“ Locate the Identification Plate

Once the window is open, look along the top edge of the sash. Youโ€™ll see a small metal plate or sticker fixed into the frame.

This plate contains important product details, including:

  • Model code
  • Size code
  • Additional manufacturing information

Itโ€™s usually silver, grey, or black with printed text.

Step 3 โ€“ Note Down the Window Code

On the plate, youโ€™ll see a combination of letters and numbers.

For example:

  • GGL MK04
  • GGU CK02
  • GPL FK06

The size code (such as MK04, CK02 or FK06) is the most important part when selecting your blind. Make sure you copy it exactly as shown, including any letters.

Once you have this code, you can confidently choose the correct blind size in our calculator.


If youโ€™re unsure or the label is worn or difficult to read, simply take a clear photo of the plate and contact us. Weโ€™ll be happy to help you confirm the correct window code before you place your order.

Delivery Information

We aim to make delivery straightforward, reliable and transparent.

Delivery Timeframes

Orders are typically delivered within 3โ€“7 working days from the date of purchase.

Please note that delivery times may vary slightly during peak periods or public holidays, but we always aim to dispatch your order as quickly as possible.

Order Dispatch & Tracking

As soon as your order has been dispatched, you will receive a tracking code via email. This allows you to monitor your delivery directly with the courier and plan for its arrival.

If you have not received tracking information within the expected timeframe, please check your junk or spam folder before contacting us.

Delivery Notes

  • Deliveries are made to the address provided at checkout.
  • Please ensure all delivery details are correct at the time of ordering.
  • If your order arrives visibly damaged, please report this to the courier at the time of delivery and contact us promptly.

If you have any questions regarding your delivery, our team is happy to assist via our Contact Page.

Returns Policy

We want you to feel confident when placing your order with us. If you change your mind, you may return unwanted items in accordance with the policy below.

Returning Unwanted Items

  • Unwanted items can be returned within 30 days of delivery.
  • Items must be returned in their original packaging and in a fully resalable condition.
  • If a blind has been installed and the red tags have been removed, we are unfortunately unable to accept a return.
  • Return shipping costs apply.
  • Returned items remain the responsibility of the customer until they are received by us.

To initiate a return, please contact us via our Contact Page. We will then provide you with detailed return instructions.

Once your return has been received and inspected, we will process your refund to your original method of payment within 7 working days.


Faulty or Damaged Items

We take great care to ensure all products arrive in perfect condition. However, if your order arrives damaged or develops a fault, please follow the steps below:

  • If your item arrives damaged, please report it to the courier at the time of delivery.
  • You must notify us within 7 working days of delivery if any damage is identified.
  • Any faults or damages noticed during installation must also be reported within 7 working days.

Please contact us through our Contact Page with full details and, where possible, photographs of the issue so we can resolve the matter quickly and efficiently.


If you need any assistance regarding your return, our team is always happy to help.

VELUX Opening Restrictor ZOZ 010K | Centre-Pivot Safety Catch

£65.25

The VELUX Opening Restrictor (ZOZ 010K) is an easy-to-fit safety catch designed to limit how far your VELUX centre-pivot roof window can open. It helps improve safety while still allowing controlled ventilation.

Available from Limehouse Roof Blinds, an official VELUX Authorised Dealer.

Estimated Delivery: 8 working days

Step 1 โ€“ Open Your VELUX Window

Gently open your roof window so you can access the top edge of the sash (the moving part of the window).

The identification plate is not visible when the window is closed, so you will need to open it slightly to locate it.

Step 2 โ€“ Locate the Identification Plate

Once the window is open, look along the top edge of the sash. Youโ€™ll see a small metal plate or sticker fixed into the frame.

This plate contains important product details, including:

  • Model code
  • Size code
  • Additional manufacturing information

Itโ€™s usually silver, grey, or black with printed text.

Step 3 โ€“ Note Down the Window Code

On the plate, youโ€™ll see a combination of letters and numbers.

For example:

  • GGL MK04
  • GGU CK02
  • GPL FK06

The size code (such as MK04, CK02 or FK06) is the most important part when selecting your blind. Make sure you copy it exactly as shown, including any letters.

Once you have this code, you can confidently choose the correct blind size in our calculator.


If youโ€™re unsure or the label is worn or difficult to read, simply take a clear photo of the plate and contact us. Weโ€™ll be happy to help you confirm the correct window code before you place your order.

Delivery Information

We aim to make delivery straightforward, reliable and transparent.

Delivery Timeframes

Orders are typically delivered within 3โ€“7 working days from the date of purchase.

Please note that delivery times may vary slightly during peak periods or public holidays, but we always aim to dispatch your order as quickly as possible.

Order Dispatch & Tracking

As soon as your order has been dispatched, you will receive a tracking code via email. This allows you to monitor your delivery directly with the courier and plan for its arrival.

If you have not received tracking information within the expected timeframe, please check your junk or spam folder before contacting us.

Delivery Notes

  • Deliveries are made to the address provided at checkout.
  • Please ensure all delivery details are correct at the time of ordering.
  • If your order arrives visibly damaged, please report this to the courier at the time of delivery and contact us promptly.

If you have any questions regarding your delivery, our team is happy to assist via our Contact Page.

Returns Policy

We want you to feel confident when placing your order with us. If you change your mind, you may return unwanted items in accordance with the policy below.

Returning Unwanted Items

  • Unwanted items can be returned within 30 days of delivery.
  • Items must be returned in their original packaging and in a fully resalable condition.
  • If a blind has been installed and the red tags have been removed, we are unfortunately unable to accept a return.
  • Return shipping costs apply.
  • Returned items remain the responsibility of the customer until they are received by us.

To initiate a return, please contact us via our Contact Page. We will then provide you with detailed return instructions.

Once your return has been received and inspected, we will process your refund to your original method of payment within 7 working days.


Faulty or Damaged Items

We take great care to ensure all products arrive in perfect condition. However, if your order arrives damaged or develops a fault, please follow the steps below:

  • If your item arrives damaged, please report it to the courier at the time of delivery.
  • You must notify us within 7 working days of delivery if any damage is identified.
  • Any faults or damages noticed during installation must also be reported within 7 working days.

Please contact us through our Contact Page with full details and, where possible, photographs of the issue so we can resolve the matter quickly and efficiently.


If you need any assistance regarding your return, our team is always happy to help.

VELUX Opening Restrictor (ZOZ 010K) โ€“ Controlled Ventilation with Added Safety

The VELUX Opening Restrictor (ZOZ 010K) is a practical safety accessory for VELUX centre-pivot roof windows. It limits the maximum opening angle of your window, helping to prevent accidental over-opening while still allowing fresh air into the room.

This makes it particularly useful in homes with children, loft conversions or areas where additional safety reassurance is required.


Regulate Window Opening

Once installed, the restrictor allows the roof window to open for everyday ventilation but prevents it from being opened beyond a set position.

To open the window further for cleaning or full access, a special release key (ZOZ 011 โ€“ sold separately) is required.

This ensures:

  • Safer everyday use

  • Controlled ventilation

  • Additional peace of mind

  • Secure operation in residential settings


Designed for VELUX Centre-Pivot Roof Windows

The ZOZ 010K restrictor is compatible with:

  • VELUX GGL centre-pivot roof windows

  • VELUX GGU centre-pivot roof windows

It is not compatible with VELUX top-hung roof windows.

Please note:

  • Cannot be used on VELUX top-hung models GPL, GPU, GHL or GHU

Always ensure compatibility with your specific VELUX window model before purchase.


Easy to Fit

The opening restrictor is designed for straightforward installation as a safety catch accessory. Once fitted, it integrates neatly with your VELUX centre-pivot window without affecting normal ventilation functionality.


Genuine VELUX Product from an Authorised Dealer

When purchasing from Limehouse Roof Blinds, you are buying a 100% genuine VELUX Opening Restrictor (ZOZ 010K) from an official VELUX Authorised Dealer. This guarantees:

  • Full compatibility with approved VELUX window models

  • Manufacturer-approved safety accessory

  • Reliable long-term performance

Choosing original VELUX accessories ensures proper fit and dependable operation.


Key Features

  • Limits opening angle of VELUX centre-pivot roof windows

  • Enhances safety and prevents over-opening

  • Allows controlled ventilation

  • Requires ZOZ 011 key (sold separately) for full release

  • Easy to fit safety catch

  • Compatible with GGL and GGU models

  • Not suitable for top-hung windows (GPL, GPU, GHL, GHU)

  • Genuine VELUX product