Dometic Grande Air All Season EXT L/H S

£735.00(inc VAT) £857.99
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  Product Description
The Dometic Grande Air All Season Extension adds 1.9 metres of valuable space to your Grande Air All Season 390 awning. Available in left-hand or right-hand versions, this extension zips seamlessly onto your main awning, creating a dedicated wet and dry area for bikes, muddy boots, or washing the dog. It keeps your living space clean while giving you the flexibility to store equipment without cluttering the main awning. The extension includes its own inflation and deflation valves, so you can set it up at the same time as your main awning or add it later when needed.

The extension adds 190cm in width and maintains a depth of 290cm, giving you nearly 2 metres of extra space. At 16.7kg and packing down to 85 x 33 x 33cm, it's straightforward to transport and set up. The airframe technology means you'll have it inflated and ready to use in minutes, with single-point inflation making the whole process simple. It fits caravans with rail heights between 235cm and 250cm, so it works with most standard touring caravans.

Practical features include a mesh fly screen for ventilation, an easy-access zipped locker for storage, and the option to add an inner bedroom tent if you need extra sleeping space for guests. The structure uses the same airframe technology as the main awning, giving you a strong, stable extension that handles all-season conditions. Pegs and a carry bag come included, so you have what you need to get started. Watching Attwoolls' pitching and packing videos will show you exactly how the extension sets up with the Grande Air All Season awning.

Dometic Grande Air All Season EXT L/H S Features


  • Single Point Inflation - Attach one pump connection and inflate the entire airframe structure quickly and efficiently
  • Airframe Technology - Ensures a strong structure and easy setup
  • Easy to Access Zipped Locker - Convenient storage space within the extension
  • Mesh Fly Screen - Provides ventilation while keeping insects out
  • Increases Total Awning Width - Each extension adds 1.9m while maintaining generous height and depth
  • Optional Inner Tent Compatibility - Toggle in the optional inner tent (sold separately) for additional sleeping space
  • Pegs and Carry Bag Included - Everything you need for setup and storage

Specifications
  • Width: 190cm
  • Depth: 290cm
  • Pack Size: 85 x 33 x 33cm
  • Weight: 16.7kg
  • Included: Pegs and carry bag

Frequently Asked Questions

Which Dometic awnings is the Grande Air All Season Extension compatible with?
The extension is designed specifically for the Dometic Grande Air All Season 390 model from 2021 onwards. It zips directly onto the main awning body and works with caravans that have rail heights between 235cm and 250cm. The extension is available in left-hand and right-hand versions, so you need to choose the correct side based on your pitch layout and where you want the additional space.
Do I need to inflate the extension separately from the main awning?
The Grande Air All Season Extension has its own inflation and deflation valves, giving you the choice to inflate it simultaneously with your main awning or separately. The single-point inflation system means you attach one pump connection and the airframe inflates throughout the structure. This flexibility lets you add the extension after you've already pitched your main awning if you decide you need the extra space later in your stay.
What are the actual dimensions and weight of the Grande Air Extension?
The extension measures 190cm in width and 290cm in depth when fully erected, adding nearly 2 metres to your total awning width. It weighs 16.7kg and packs down to 85cm x 33cm x 33cm in the included carry bag. The extension maintains the same generous height as the main Grande Air awning, so you'll have full standing room throughout the additional space.
What is the inner tent option for the Grande Air Extension?
An inner bedroom tent is available as a separate purchase for the Grande Air All Season Extension. This inner tent toggles into place inside the extension, converting the space into a sleeping area for extra guests. The inner tent creates a private sleeping compartment while still allowing you to use the main awning as your living area. You need to purchase the inner tent separately as it is not included with the extension.
How do I know whether I need a left-hand or right-hand extension?
Stand facing your caravan from the front. The left-hand extension attaches to the left side of your awning as you're looking at it, and the right-hand extension goes on the right side. Think about your pitch layout and where you want the extra space based on access to facilities, neighbouring pitches, and where you plan to store bikes or equipment. The extension zips onto the corresponding side of the Grande Air All Season awning body.
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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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