NomadicArk Double-Pane Acrylic Awning Windows

Overview

Walk through a European campsite and nearly every motorhome has the same kind of window: a flat, tinted, double-pane acrylic panel that hinges out from the top on gas struts, with a roller blind and fly screen built into the interior frame. Dometic's Seitz S4 defined the category. NomadicArk, a company founded in the North West of England that now sells across North America and Europe, makes the same style of window for the van-build market at a noticeably lower price.

The reason to want one is insulation. A dual-pane acrylic window is about three times less thermally conductive than glass and the assembly weighs around 40 percent less than a comparable single-pane glass RV window. For a van used in real winters or desert summers, that is the difference between a window that sweats and one that does not.

What you get

NomadicArk sells two lines. The ACR series is pure acrylic: two panes of privacy-tinted acrylic in a polyurethane frame. The ACG13 series is a glass-acrylic hybrid with a glass outer pane for scratch resistance and an acrylic inner pane for insulation, at a small premium. Both are available with rounded or square corners and in black or white.

Every window ships with the interior trim, an integrated roller blind, and a fly screen, plus installation and maintenance guides. A powder-coated aluminum clamp ring is included and sized for 1-inch walls, which suits most insulated van builds. The panes are flat with radius corners rather than the domed bubble of older RV acrylic, so from outside the window looks close to OEM glass.

Sizes run from a 300-by-300-millimeter porthole to a 900-by-450 (35.4-by-17.7-inch) panel that suits a Sprinter or Transit slider door. The 450-by-400 weighs about 11 pounds and the 900-by-450 about 18.

Opening and security

The pane is top-hinged and swings out as an awning on a gas-strut lift, so it stays open in the rain and does not slam in a gust. NomadicArk describes it as a hydraulic lift system. Closed, it latches at four points around the frame, which matters both for security and for pulling the seal tight against the gasket. There is no external handle, so it cannot be opened from outside.

Installation

The clamp-ring design is the standard for this type of window. You cut the opening, seat the exterior frame with sealant, then draw the interior clamp ring up to it with screws so the wall is sandwiched between them. Two people and an afternoon per window is realistic for a first build. The included ring is for 1-inch walls. If your wall is thinner, you will need to shim; if it is much thicker, check with the retailer before ordering, since competitors like Tern Overland sell rings in several thickness ranges.

Performance

We have not installed these ourselves and, unlike Dometic or Tern Overland, NomadicArk does not yet have a deep bench of independent owner reviews to draw on. The retailer product pages we checked had no posted reviews. What we can say is that the construction, double acrylic in a polyurethane frame with a gasketed clamp ring, is the same architecture as the European windows that have decades of service behind them. The manufacturer claims high UV resistance and high resistance to heat and cold transmission, both of which are inherent to double-pane acrylic.

The usual acrylic caveats apply. It scratches more easily than glass, so never wipe it dry and use a plastic-safe cleaner. If the van sees a lot of overgrown forest roads, the ACG13 hybrid's glass outer pane is worth the extra money.

Warranty

One year. That is the weak point. Tern Overland's Arctic Tern windows also carry a one-year warranty, so NomadicArk is not out of line for the category, but it is short for a component you are cutting a permanent hole in your van for. Buy from a retailer that will handle a claim for you.

Price and value

Pricing varies by retailer. Panther RV Products lists the ACR series from $330 for the small 300-by-300 up to $574 for the 900-by-450, with the ACG13 hybrids from $398 to $583, and runs a 10 percent discount on four or more. Nomadic Supply Company lists the 450-by-400 at $427 and the 900-by-450 at $627, with some sizes up to $870. Backland Expedition Gear and Sandy Vans also stock the line.

For comparison, a Tern Overland Arctic Tern 550-by-700 double-pane window with the same integrated blind and screen is $778, and a Dometic S4 of similar size lands in the same range once it is imported. NomadicArk is consistently a few hundred dollars less for a functionally equivalent window.

Who should buy it

Buy it if you are building a van, truck camper, or small trailer for year-round use and want the European double-pane setup without the European price. Pick the ACG13 hybrid if you drive brushy trails, and buy four at once if you can to get the discount.

Look at Dometic or Tern Overland instead if a longer track record matters more to you than a few hundred dollars, or at a plain glass slider if you only camp in mild weather and want the cheapest possible window.

Sources

• Nomadic Supply Company: NomadicArk 900 × 450 awning window and 450 × 400 awning window
• Panther RV Products: RV and Van Acrylic Windows
• Backland Expedition Gear: NomadicArk 450 × 400 and Sandy Vans: NomadicArk flat acrylic awning window
• Campervan HQ: Arctic Tern Double-Pane RV Window 550 × 700
• Dometic S4
• Escape Trailer: Acrylic vs Glass Windows and DVA Mechanics: Sprinter Van Windows 2026