The smarter double air fryer. The Ninja Double Stack XL SL400UKCP is a revolutionary 2-drawer air fryer that stacks vertically rather than side by side — making it 30% slimmer than traditional dual-zone air fryers while delivering 9.5L of total capacity for up to 8 people. Cook on 4 levels simultaneously with the included Stacked Meal racks, mix and match 6 cooking functions across two independently-controlled drawers, and use SYNC to bring everything to the table at exactly the same time. At just 28cm wide and 38.5cm tall, it's designed to sit under kitchen cabinets — giving you all the power of a double air fryer without taking over your worktop. Available in a striking Black/Copper finish.

Key Features:

• 30% Slimmer Than Side-by-Side Dual Air Fryers — The unique vertical stacked drawer design takes up significantly less worktop space than traditional dual-zone air fryers, making it the perfect choice for smaller kitchens that still need big capacity
• Cook on 4 Levels at Once with Stacked Meal Racks — Insert the included multi-layer racks into each 4.75L drawer to double your cooking surface, giving you 4 tiers of simultaneous cooking space for perfectly even results throughout
• 9.5L Total Capacity — Feeds 8+ People — With two 4.75L drawers, each capable of fitting a whole 1.4kg roast chicken, this air fryer is built to handle full family meals and large gatherings without multiple cooking rounds
• 2 Independently Controlled Drawers — Set different cooking functions, temperatures, and times in each drawer independently, catering for different foods, dietary requirements, or portion sizes at the same time
• SYNC Function — The SYNC function intelligently times both drawers to finish cooking at exactly the same moment, so mains and sides, or different party dishes, are all ready together and served hot
• 6 Cooking Functions — Air Fry, Max Crisp, Roast, Bake, Dehydrate, and Reheat give you full versatility beyond just air frying — bake cakes, roast joints, dehydrate snacks, or blast frozen food to crispy perfection with Max Crisp
• Individual Heat Sources & 360° Rear Fans — Each drawer has its own dedicated heat source and rear fan delivering 360° air circulation for all-over, evenly crispy results on every layer — no rotating needed
• Up to 55% Less Energy Than a Conventional Oven — More energy efficient than cooking in a traditional fan oven, helping to reduce household energy bills for everyday cooking
• Up to 55% Faster Than Fan Ovens — Gets family favourites on the table in significantly less time than a conventional oven, making weeknight meals quicker and easier
• Up to 75% Less Fat Than Traditional Frying — Air Fry function uses little to no oil, dramatically reducing fat content compared to deep frying for healthier results without compromising on crunch
• Dishwasher-Safe Components — Non-stick drawers, crisper plates, and wire racks are all dishwasher-safe for quick, effortless cleaning after every use
• Designed to Fit Under Kitchen Cabinets — At 38.5cm tall, the Double Stack XL is specifically designed to slide under standard kitchen wall cabinets, keeping your worktop clear and clutter-free
• 2-Year Guarantee

Specifications:

• Brand: Ninja
• Model: SL400UKCP
• Colour: Black / Copper
• Total Capacity: 9.5L (2 x 4.75L drawers)
• Cooking Levels: 4 (with racks inserted)
• Functions: Air Fry, Max Crisp, Roast, Bake, Dehydrate, Reheat
• Serves: Up to 8 people
• Dimensions: H38.5 x D47 x W28cm
• Weight: 10.3kg
• Dishwasher Safe: Yes (drawers, crisper plates, racks)

What's In The Box:

• 1x Ninja Double Stack 9.5L Air Fryer
• 2x 4.75L Non-Stick Drawers
• 2x Non-Stick Crisper Plates
• 2x Multi-Layer Rack
• 1x Instruction Booklet