
Best Space-Saving Design
Ninja
Ninja Double Stack XL SL400UK
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


