Skip to content
New Product Alert- WATER LINE By the foot!
New Product Alert- WATER HOSE by the foot!

Arctic Tern Window 450x500 / 17.72"x19.69"

Original price $577.00 - Original price $577.00
Original price
$577.00 - $577.00
Current price $577.00

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, 45-54mm and 64-74mm (+$69)
  • 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 the 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.
  • They are 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 4 reviews
    Mary O.
    Thumbs up!

    My husband and I love our arctic tern windows. What sells us is the temperature control. The condensation is basically non-existent which is such a bonus.

    Excellent window

    I was very happy with the design and quality of this window. I only have three suggestions. (1) The screws that were shipped with the unit had the heads stripped out very easily. I ended up purchasing identically sized screws, but stainless steel with Torx heads. I would suggest the manufacturer supply screws at the same level of quality as the window. (2) I dislike the branding stickers that are between the panes, and even the ones on the outside were hard to remove. (3) Include a template. It was a little confusing and frustrating to make one, especially when trying to account for the additional space for the blinds/screens.

    Rob and Sue
    Windows Exceeded Our Expectations

    We researched windows long and hard because we had heard so many bad news stories from other caravanners and settled on Arctic Tern because of build quality, strong/good looks and screen system including fine mesh proof flyscreens. We've had the windows installed for over a year now without any issues!! Love them!

    John H
    Love this size

    I purchased a few of these Arctic Tern windows and I love this one and its size the best! You can see my other review for the 450x1100.

    Compare products

    {"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

    Select first item to compare

    Select second item to compare

    Select third item to compare