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Dometic Grande Air All-Season 390 S

£1843.99(inc VAT) £1999.00
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  Product Description
The Dometic Grande Air All Season 390 S is a premium inflatable porch awning designed for caravanners who need extra living space without the hassle of traditional pole systems. With a generous 3-meter depth and 390cm width, this awning creates a substantial covered area for dining, relaxing or storing equipment. It fits caravans with rail heights between 235cm and 265cm, and thanks to the dual keder system (5.5mm and 7mm), it attaches to both standard caravan awning rails and motorhome cassette awnings. At 39.4kg, it's heavier than some alternatives, but the weight reflects the robust construction and complete package that includes two side panels, two front panels, curtain set, grey storm straps, 2.2L pump and peg pack.

The awning uses Dometic's Weathershield All-Season material, which has been tested in Australia's intense UV conditions and Europe's wettest regions. The Dual-Pitch Roof System keeps the roof taut and deflects wind while shedding rainwater efficiently to prevent pooling. The single-point inflation system lets you pump up the entire structure from one external valve, making setup straightforward even in poor weather. Apex ventilation at the roof peak reduces condensation and improves airflow during humid conditions or prolonged seasonal pitches.

The Multi-Height System adjusts to different vehicle types, and you have the option to add left-hand or right-hand extensions (sold separately) to increase your covered area beyond the caravan length. The dual keder beading means you won't need to change awnings if you switch between a caravan and motorhome. Two grey storm straps are included to secure the structure in windy conditions. The complete package arrives in two carry bags for easier transportation, and the 2.2L pump makes inflation quick. Dometic's Air Frame technology has proven reliable for thousands of caravanners, and the breathable fabric prevents the stuffy atmosphere common in cheaper synthetic awnings.

Dometic Grande Air All- Season 390 S Features


  • Single Point Inflation: Pump up the entire awning from one valve for quick and easy setup
  • Multiple Deflation Points: Pack away faster with several deflation valves positioned around the awning
  • Weathershield All-Season Material: UV-resistant and ultra-rugged fabric designed for extended seasonal pitches
  • Large Full-Height Windows and Skylights: Enjoy panoramic views and natural light throughout the day and night
  • Multi-Height System: Adjusts precisely to fit your caravan or motorhome rail height
  • Removable Panels: Reduce weight when travelling and make carrying more manageable
  • Interchangeable Side Panels: Swap side panels to change the door position to suit your pitch layout
  • Dual Keder Beading: Attaches to both motorhome wind-out awnings and traditional caravan awning rails
  • Apex Ventilation: Roof vents improve airflow and reduce condensation inside the awning

Specifications
  • Width: 390cm
  • Depth: 300cm
  • Weight: 28.1
  • Minimum Weight: 26.8 kg
  • Pitching Time: 10 mins
  • Fabric: Weathershield Four Seasons
  • Suitable for: Caravans & Motorhomes
  • Rail Height: 235-265cm
  • Minimum Straight Rail Length: 400cm
  • UV Protection: UPF 50 rated for sun protection
  • Waterproof: Tested to withstand 200L/m² per hour

Frequently Asked Questions

What rail height does the Dometic Grande Air All Season 390 S fit?
The 390 S model fits caravans and motorhomes with awning rail heights between 235cm and 265cm. Dometic's Multi-Height System adjusts the awning to your specific vehicle height within this range. If your rail height is between 265cm and 295cm, you need the 390 M version instead of the S model.
How long does it take to inflate the Dometic Grande Air All Season 390 S?
The single-point inflation system allows you to inflate the entire awning from one external valve using the included 2.2L pump. Most users complete inflation in 10-15 minutes. The awning has multiple deflation points to make packing away faster and easier when you're ready to leave.
Can I attach the Grande Air All Season 390 S to a motorhome?
Yes, the awning comes with dual keder beading as standard. The 5.5mm keder attaches to motorhome cassette awnings (wind-out awnings), while the 7mm keder fits traditional caravan awning rails. This dual system means you can use the same awning if you switch between a caravan and motorhome.
What is Weathershield All-Season material and why does it matter?
Weathershield All-Season is Dometic's premium breathable fabric designed for extended seasonal pitching and touring in extreme conditions. It has been tested in Australia's intense UV conditions and Europe's wettest regions to withstand prolonged sun exposure and heavy rain. The breathable construction reduces condensation compared to cheaper synthetic materials, making it comfortable for long-term use.
Can I add extensions to the Dometic Grande Air All Season 390 S?
Yes, you can attach left-hand or right-hand extensions to either or both sides of the awning. These extensions zip onto the main awning body and are sold separately. They increase your covered space beyond the length of your caravan, creating additional room for seating, storage or sleeping areas.
What does the Dual-Pitch Roof System do on the Grande Air All Season?
The Dual-Pitch Roof System keeps the roof line taut and creates two angled sections that deflect wind and shed rainwater efficiently. This design prevents water from pooling on the roof during heavy rain, which would otherwise add weight and stress to the structure. The system also increases headroom inside the awning.
What's included in the Dometic Grande Air All Season 390 S package?
The complete package includes the main awning body, two side panels, two front panels, one curtain set, two grey storm straps, one 2.2L pump, one peg pack, one instruction manual and two carry bags. Everything you need for setup is included, though you might want to purchase extensions or additional accessories separately.
Is the Dometic Grande Air All Season 390 S suitable for seasonal pitching?
Yes, the awning is specifically designed for seasonal use thanks to its Weathershield All-Season material and robust Air Frame construction. The UV-resistant fabric withstands prolonged sun exposure, and the breathable design prevents the condensation issues common during extended pitches. The Dual-Pitch Roof System and included storm straps provide stability in varying weather conditions throughout the season.
EAN-13 : 5060646167999
Dometic Grande Air All-Season 390 S Video

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If you’ve changed your mind about keeping your purchase, please return it in its original condition with proof of purchase and we’ll exchange or refund it. Unless faulty, this should be within 100 days of receiving your order. By original condition, we’d expect this to mean that you’ve kept packaging and labels, and that the item is undamaged and unused.

For further information of how to return your item, please visit the "Returning an Unwanted/Faulty/Damaged Item" section on our Help Page.
  Did you know we have been established and have been in the caravan and motorhome industry for over 50 years?
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