VELUX Dual Action Roof Window (GPL)


Buy a VELUX Dual Action Roof Window from a real Aussie business. Get expert advice & guidance. We know VELUX Skylights because we install them.

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SKU: GPL Categories: , Tags: , , , , ,

The VELUX Dual Action Roof Window (GPL) is an openable, dual action roof window designed for in-reach applications and developed for use in attics and lofts to maximise roof top views and ventilation.


  • Opens in two ways: the bottom handle allows for top-hung opening; while a short pull on the top control bar operates the filtered vent flap for passive ventilation even while the window is shut. A longer pull allows the sash to rotate 180° for ease of cleaning the outer pane from inside the room.
  • White pre-painted pine sash and frame
  • Complete with outer aluminium cappings and flashings for tile or corrugated iron roofs.
  • Available in 5 sizes
  • Laminated double glazing as standard
  • Insect screen available as extra

Made for Australia

  • 5 Star WERS rating
  • Cyclone, Load & Water tested (AS4285)
  • Safety tested (AS1288)
  • 70% Heat Block
  • 95% UV Block

Please note: this does NOT include the VELUX EDW Flashing Kit.

VELUX Dual Action Roof Window Sizes

Before choosing a VELUX Roof Window, we recommend that you measure the spacing between your roof trusses. VELUX Dual Action Roof Window are available in a range of sizes that are designed to fit within typical roof truss spacings. Once you know your truss spacings, select a VELUX Roof Window with a width less than it. Truss modifications are possible but this increases the installation cost.

VELUX GGL & GPL Roof Window Sizes

The sizes above are the overall frame dimensions in mm (width x height).

  • The “CK0x” range fit within 600mm truss spacings.
  • The “MK0x” range fit within 900mm truss spacings.
  • The “SK0x” range fit within 1200mm truss spacings.

Not sure if you’re ordering the correct size? Call our team on 1300 35 15 15 for expert advice & guidance.

VELUX Roof Window Blinds

Control the amount of light coming in through your roof window with a stylish and functional VELUX Blind. Choose from the VELUX FHC Manual Honeycomb Blind or the VELUX DKL Manual Blockout Blind.

VELUX Dual Action Roof Window Flashings

For tile roofs, we recommend the standard VELUX EDW Flashing Kit. This is what we use when installing a VELUX Centre Pivot Roof Window ourselves.

For corrugated metal roofs, we recommend a custom flashing be used. Flashings can be made to match to your roof colour providing a seamless integration. The EDW Flashing can be used on corrugated profiles however, we believe a custom flashing gives a superior finish and better water proofing.

For metal deck roofs (Klip-lok®, Trimdek®, Spandek®), a custom flashing is required.

Supreme Skylights manufactures custom VELUX Centre Pivot Roof Window flashings. These are available in all ColorBond® colours and made to order. Contact us for a quote.


All VELUX Roof Windows come with a 10 year product warranty so you can feel confident knowing that you’re buying a premium quality product that’s made to endure the harsh Australian weather.

Read more about the VELUX warranty.

When your VELUX Dual Action Roof Window is installed by Supreme Skylights, you’ll also receive a 10 year installation warranty.

Maintenance & Repairs

To extend the lifespan of your VELUX Roof Window and keep it looking pristine, there are some simple maintenance tasks you can do yourself. Read more about VELUX Skylight maintenance.

Supreme Skylights will provide repair services to any VELUX Skylights that we install. For repairs to VELUX Skylights not installed by us, or outside our service area, we suggest ordering a service call from VELUX.

VELUX Dual Action Roof Window Installation

The VELUX Centre Pivot Roof Window can be installed on a roof with a pitch of 15° to 55°. Roofs with a lower pitch where a VELUX Centre Pivot Roof Window is preferred, a custom pitched flashing will be required.

Download the VELUX GGL & GPL Roof Window installation instructions.

The installation of a VELUX Roof Window, while simple in theory, can be far more complicated in practice. Obstructions such as electrical cables, water & gas pipes, and AC ducting can prevent ideal placement. Multiple tradespeople (builder, roof plumber, plasterer & painter) are required if you want a complete installation. For these reasons, we recommend you have your VELUX Roof Window installed by an experienced skylight installer. Don’t risk damaging your home and voiding your insurance with dodgy installation.

Supreme Skylights provides complete installation of VELUX Centre Pivot Roof Window in regional Victoria and southern NSW. We’re an accredited VELUX dealer and installer. We’ve also been manufacturing and installing our own skylights for over 35 years. Our installation services include a 10 year installation warranty.

Shipping & Delivery

We know paying for shipping costs sucks, that’s why we aim to keep them as low as possible. Our preferred shipping provider is Pack & Send due to their low costs and reliable service. To get shipping costs, use the shipping calculator on this page and enter your delivery address.

For in-stock items, allow 1-2 days for packing plus 2-3 days for delivery of items (3-5 days total)*.

For out-of-stock items, allow 7 days to receive stock, 1-2 days for packing plus 2-3 days for delivery of items (10-12 days total)*.

*Actual delivery times will vary depending on both your location and the availability of stock from the manufacturer.


Please see our returns policy for further details.


Get 7% off VELUX Dual Action Roof Windows when you sign-up to our Trade Price Program (eligible trades businesses only).

10% Seniors discount* Available for over 60’s, on the cost of installation only, proof required e.g. seniors card, drivers licence, etc.

Weight60 kg
Dimensions17 × 120 × 132 cm
Velux Size

CK04 (550 x 980mm), MK04 (780 x 980mm), MK06 (780 x 1180mm), MK08 (780 x 1400mm), SK06 (1140 x 1180mm)


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