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Arctic Tern Window 450x900 / 17.72" x 35.43"

Original price $737.00 - Original price $737.00
Original price
$737.00 - $737.00
Current price $737.00
Expedition Upfitter is proud to introduce Arctic Tern acrylic windows. These RV windows exude quality in every aspect and are designed to meet the needs of serious travellers and overlanders. Unlike slider windows, these units allow the full size of the window to be open for maximum ventilation.

They feature double-pane acrylic windows that are made in Europe and meet strict European ECE standards. These windows can be set at 10 and 35 degrees open for the 300mm size, and 20, 40, and 60 degrees for all of the other sizes. The windows also feature a semi-lock position that allows air in during stormy conditions. A separate interior cover panel contains the retractable fine mesh insect screen on the top, and a blackout blind with the reflective exterior on the bottom. These can be used separately or together for infinite combinations of privacy and fresh air. The blind also creates a second dead air space for maximum thermal efficiency in very cold conditions. The screwless clamp style design provides a simple and secure fixing method. Combined with the easy fit internal blind ensemble and optional curtain tracking a quality finish to your RV is assured.

Arctic Tern has a weight savings of over 60% of similarly sized glass windows. Lastly, these windows can serve as an emergency exit. We also offer a 500mm x 700mm roof hatch with similar blinds, screens, and built-in LED lighting.


Our windows are warranted for one year against defects in workmanship and materials. We offer a complete in-house part and service department.

Take a look at these additional features:

  • Heavy-duty powder-coated aluminum frame
  • Grey, double glazed acrylic panel, UV resistant, certified to European ECE standards.
  • Telescopic strut supports hold window securely when open
  • Push-button locking handles
  • High-quality rubber seals
  • Three-panel thicknesses to accommodate 24-34mm, 34-44mm, and 45-54mm, NEW 64-74mm
  • Three-stage opening position on all windows greater than 300mm and two-stage up to 300mm.
  • 9 sizes to choose from
  • Easy installation
  • Full 1-year manufacturer’s warranty
  • The clever design means a 24% increase in opening size/ventilation access compared to leading competitors (based on a 450×500 window)
  • Pull down block out blind with a reflective backing.
  • Pull down insect blind.
  • Powder-coated aluminum frame.
  • All windows are equipped with a semi-lock position for ventilation during windy conditions while parked.
  • The blind system can be activated individually or locked together and positioned as required.
  • Screw-less clamp design provides a simple and secure fixing method
  • Windows are ADR approved and can be used on motor homes.
  • Shipped directly from our warehouse in the USA. 

Additional documentation can be found on our
Resource Page- including installments and fitments. 

    Customer Reviews

    Based on 5 reviews
    John Tang
    Attic tern

    Good overall, understand delay due to back order, all good

    So versatile!

    These windows are of excellent quality and come with great documentation. The bug screen and thermal window shade are awesome and easy to deploy. The option to be able to leave the window cracked in a locked position is also a great feature.

    Jim J
    Love em!

    Thanks to the staff at expedition upfitter, they answered all of my many many questions! I'm beyond happy with the Arctic Tern windows I installed! These really are such an upgrade from all of the alternatives I checked out! I will be back to purchase more.

    Jean Pierre Tremblay
    Good fit and extremely good service!

    I'm very happy with my two 450 X 900 mm windows that I installed on my Ford Transit van. The product is exactly as described and the documents (consideration for fitment and installation instructions) are complete, well detailed and very useful. But, most of all, I'm more than happy with the level of service that I experienced with Expedition Upfiter: one of the three windows I ordered was broken during shipping. I was in contact with Katie, that took really good care of the whole claim process. She was transparent and really customer-oriented while resolving this pickle. Finally, while UPS was rather slow fixing this problem (more reactive than proactive...), Expedition Upfitter decided to send me back a new window. Thumbs up! I will definitely do business again with these people!

    Fran & Al
    Great Window

    I love this window but wished we got one slightly bigger! Bigger is always better! My husband installed 2 of these windows in our van in an afternoon, I couldn't believe how fast that went! Love the bug screen mesh and blackout ability of these.

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