HomeBest Air FryersNinja Double Stack XL SL400UK
Ninja Double Stack XL SL400UK — image 1
Best Space-Saving Design

Ninja

Ninja Double Stack XL SL400UK

9.1/ 10
9.1/10

Amazon: 4.6★ from 5,200 ratings

£269.99

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Key features

  • Vertical dual-drawer design (9.5L total)
  • 30% smaller footprint than side-by-side models
  • 2 × 4.75L independent drawers
  • Sync & Match functions
  • 6 cooking functions
  • Dishwasher-safe parts
  • Digital touchscreen

Our verdict

The Double Stack XL solves the biggest complaint about dual-zone air fryers: they take up too much worktop space. By stacking two drawers vertically instead of side-by-side, Ninja delivers the same 9.5L dual-zone capacity in a footprint that's 30% smaller than the AF400UK. Each 4.75L drawer operates independently with its own temperature and timer, and Sync/Match functions keep everything coordinated. If you love the idea of a dual-zone fryer but have a smaller kitchen, this is the answer.

Pros

  • Saves significant worktop space
  • Full dual-zone functionality
  • Compact vertical design looks sleek
  • Same great Ninja cooking performance
  • Independent drawer controls

Cons

  • Premium price
  • Drawers are narrower than side-by-side models
  • Top drawer slightly harder to access
  • Heavy for its footprint