Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 2
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 3
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 4
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 5
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 6
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 7
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 8
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 9
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 10
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 11
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 12
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 13
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 14
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey — image 15
1 / 15
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 1
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 2
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 3
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 4
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 5
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 6
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 7
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 8
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 9
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 10
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 11
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 12
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 13
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 14
Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey thumbnail 15
★★★★★ 4.9 · 847 verified reviews

Ninja SL400UK Double Stack XL 2-Drawer Air Fryer 9.5L Grey

£125.70

Tax included. Free shipping on all orders.

🟢 In Stock — Dispatched in 1-2 business days
🚚 Free Standard Delivery: Arrives in 3–5 business days
🛡 30-Day Free Returns: $0 Restocking Fee
🔒 SSL Encrypted Checkout: PCI-DSS Level 1 Protection

The Ninja SL400UK Double Stack XL Air Fryer features an innovative vertical two-drawer design that maximizes countertop space while providing a generous 9.5L capacity. Powered by individual heat sources, rear fans, and included Stacked Meal racks, it lets you cook across four distinct levels simultaneously for even, 360-degree crisping.

With six versatile cooking functions—Air Fry, Roast, Bake, Reheat, Dehydrate, and Max Crisp—this appliance offers independently controlled drawers with SYNC technology to ensure different foods finish at the same time. Non-stick, dishwasher-safe drawers and crisper plates ensure effortless cleaning after preparing meals for up to eight people.

Key Features

Brand Ninja
Model SL400UK
Product Type Air Fryer
Colour Grey
Capacity 9.5L
Height 38.5 cm
Number of Drawers 2
Cooking Levels 4
Cooking Functions 6
Functions Air Fry, Roast, Bake, Reheat, Dehydrate, Max Crisp
Dishwasher Safe Parts Yes
Control Type Side-mounted Control Panel

Highlights

  • Space-saving vertical stacked 2-drawer design fits neatly under kitchen cabinets
  • Large 9.5L total capacity feeds up to 8 people
  • 4 cooking levels with included Stacked Meal racks and 360° air circulation
  • 6 versatile cooking functions: Air Fry, Roast, Bake, Reheat, Dehydrate, and Max Crisp
  • SYNC setting coordinates separate times and temperatures across both drawers
  • Dishwasher-safe non-stick drawers, crisper plates, and racks

Materials & care

Allow the appliance to cool before cleaning. The non-stick drawers, crisper plates, and stacked meal racks are dishwasher safe. Wipe the main unit and control panel clean with a damp cloth.

Warranty

The Ninja Double Stack XL 2-Drawer 9.5L Air Fryer includes a 2-year manufacturer's guarantee upon registration.

What's included

  • Ninja Double Stack XL Air Fryer SL400UK
  • 2 Non-stick drawers
  • 2 Non-stick crisper plates
  • 2 Stainless steel stacked meal racks
  • Chef-created recipe guide

Frequently asked questions

How much food can the Ninja SL400UK hold?

It features a total 9.5L capacity across two drawers, with each drawer capable of holding up to a 1.4kg roast chicken, serving up to 8 people.

How does the SYNC feature work?

The SYNC function allows you to program different cooking functions, times, and temperatures in each drawer while ensuring both finish cooking at the exact same time.

How many cooking levels are available?

Using the included Stacked Meal racks, you can cook across 4 levels simultaneously across the two vertical drawers.

Are the removable parts dishwasher safe?

Yes, the non-stick drawers, crisper plates, and wire racks are all dishwasher safe for easy cleaning.

As Featured In & Trusted By Industry Leaders
FORBES
TECHRADAR
VOGUE
GQ MAGAZINE
BLOOMBERG
BUSINESS INSIDER

Free Standard Delivery

Arrives in 3–5 business days, fully tracked.

30-Day Free Returns

$0 restocking fee, 100% money-back guarantee.

SSL Secure Checkout

256-bit SSL encryption & PCI-DSS Level 1 security.

24/7 Dedicated Support

Real human support, guaranteed reply in 24h.

Common Questions

How long does delivery take?

Orders are processed within 1–2 business days. Standard shipping is 100% free on all orders and arrives within 3–5 business days with full tracking.

What is your return policy?

We offer a 30-Day Free Return Policy with $0 restocking fee. Refunds are processed within 14 days upon receipt at our warehouse.

Is checkout secure?

Yes — protected by 256-bit SSL encryption and PCI-DSS Level 1 certification. We accept Visa, Mastercard, AMEX, PayPal, Apple Pay, and Google Pay.

How can I contact support?

Contact us via email or telephone through our Contact Us page. All inquiries receive a response within 24 business hours.

Verified Customer Reviews

Real 5-star ratings from verified buyers — fast shipping & guaranteed quality

★★★★★
2 days ago
🛒 Keter Stronghold 10x15 Shed - Grey
Outstanding quality, arrived in 2 days
""Keter Stronghold 10x15 Shed - Grey" feels genuinely premium and setup was a breeze — fast dispatch with excellent tracking updates."
J
James H.
London, UK · ✓ Verified Buyer
★★★★★
4 days ago
🛒 Keter Newton 7 x 11ft Double Door Outdoor Apex Plastic Garden Shed
Solid, well-engineered, daily driver now
"Much higher quality than typical online alternatives — the "Keter Newton 7 x 11ft Double Door Outdoor Apex Plastic Garden Shed" delivers exactly as described, every time."
S
Sarah K.
Manchester, UK · ✓ Verified Buyer
★★★★★
1 week ago
🛒 Keter Premier Plastic Garden Shed 7.5 x 9ft - Grey
Human support replied in minutes
"Got a helpful answer before buying and the package for "Keter Premier Plastic Garden Shed 7.5 x 9ft - Grey" arrived in perfect condition. Five stars."
D
David M.
Bristol, UK · ✓ Verified Buyer
★★★★★
2 weeks ago
🛒 Keter Artisan 11 x 7ft Double Door Pent Outdoor Plastic Garden Shed
Verified buyer — 100% recommended
"Fast shipping, accurate description, top-notch service — "Keter Artisan 11 x 7ft Double Door Pent Outdoor Plastic Garden Shed" is the real deal. Will order again."
E
Emma W.
Birmingham, UK · ✓ Verified Buyer