Ninja Double Stack XL SL400UK 9.5L Air Fryer

The Ninja Double Stack XL SL400UK combines two large cooking drawers with a space-saving vertical design. Its stacked layout is 30% slimmer than the Ninja AF400, while the 9.5L capacity is ideal for larger families and entertaining.

• 9.5L total capacity: Two independently controlled 4.75L drawers.
• Space-saving design: 30% slimmer than the Ninja AF400.
• Four cooking levels: Includes two Stacked Meal racks.
• Six functions: Air Fry, Max Crisp, Roast, Bake, Dehydrate and Reheat.
• Up to 55% faster than fan ovens: Based on testing with sausages and fish fingers.

Two independently controlled drawers

Cook different foods using separate functions, temperatures and times. Use SYNC to have both drawers finish together or MATCH to copy the same settings across both zones.

Each 4.75L drawer has its own heating element and fan, helping prevent flavours and cooking conditions from crossing between zones.

Cook four foods at once

The included Stacked Meal racks create two cooking levels inside each drawer. This allows meat, vegetables, chips and other meal components to be prepared across four levels simultaneously.

Six cooking functions

• Air Fry: Crisp food using little or no added oil.
• Max Crisp: Cook smaller portions of frozen food at up to 240°C.
• Roast: Prepare meat, poultry and vegetables.
• Bake: Make cakes, pastries and baked dishes.
• Reheat: Warm leftovers while restoring crispness.
• Dehydrate: Dry fruit, vegetables, herbs and meat.

Ninja SL400UK specifications

What is included?

• Ninja Double Stack XL SL400UK
• 2 × 4.75L non-stick cooking drawers
• 2 × non-stick crisper plates
• 2 × stainless-steel Stacked Meal racks
• Instruction booklet
• Recipe inspiration guide

Frequently asked questions

How many people can the SL400UK cook for?
Ninja describes the 9.5L capacity as suitable for meals for up to eight people, depending on food and portion size.

Can each drawer use different settings?
Yes. Each drawer has independent function, temperature and time controls.

Can it cook four foods at once?
Yes. The two included racks create four cooking levels across the two drawers.

What is the difference between the SL300UK and SL400UK?
The SL300UK has two 3.8L drawers and 7.6L total capacity. The larger SL400UK has two 4.75L drawers and 9.5L total capacity.

Are the removable parts dishwasher safe?
Yes. The drawers, crisper plates and racks are dishwasher safe.

At a glance: A large-capacity dual air fryer for families wanting two independent cooking zones in a narrower vertical design.