Ninja sl400uk
Air Fryers

sl400uk

Ninja

Released May 1, 2024 · Analysis updated Mar 3, 2026

Air fryer with intuitive controls, double stack racks for larger batches, and a compact stacked design with dishwasher-safe parts. The Ninja sl400uk scores 80/100 based on 4 expert reviews in the air fryers category. Coverage includes reviews from Techradar, Housebeautiful, T3, and Idealhome.

Critic Score

What's this?
80

based on 4 expert reviews

TechradarHousebeautifulT3Idealhome

Low confidence · only 4 reviews

Where to buy

amazon$168.95

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Pros

No pros extracted yet

Cons

  • High price(3)
  • Uneven cooking(3)
  • Long cook times(2)

4 Expert Reviews

95
May 8, 2024

The Ninja Double Stack air fryer has its drawers stacked on top of each other, to maximize counter space without losing cooking capacity, and it's easily my favorite air fryer.

78
Aug 8, 2024

The Ninja Double Stack offers a space-saving design with four cooking racks but cooks slightly slower and less evenly than the Dual Zone.

78
Jun 19, 2024

The Ninja Double Stack XL is a two-drawer air fryer that takes up less worktop space than its rivals.

68
Jul 3, 2024

The Ninja Double Stack Air Fryer is an innovative space-saving design, but its performance doesn't quite match Ninja's usual high standards.