The Advanced Air System allows for quick and easy setup, with a single-point inflation system that can be managed by one person, streamlining the process of pitching the awning. The zip-on tunnel design simplifies attachment and detachment from the motorhome, so you don't need a drive-away kit, and the tunnel's modular design means it can be replaced if you change vehicles in the future.

The Neptune 400 High also features a taller rear air beam, designed specifically for higher vehicles to ensure better door clearance. Its removable side panels and permanent front vent offer excellent ventilation, keeping the interior space fresh and comfortable throughout your stay. With a removable groundsheet and the option to add an inner tent, the Neptune 400 is versatile enough to suit any type of trip. Backed by the Anti-Weather System, this awning provides superior protection against the elements.