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Ninja Double Stack XL air fryer 9.5 l with thermometer and Smart Cook

£87.99

Brand and model: Ninja Double Stack XL med Smart Cook, SL451EU / SL451EUCYD
Capacity: 9.5 l (two 4.75 l drawers)
Dimensions (H × W × D): 38.5 × 28 × 47 cm (manufacturer's figure)

Colour: Grey

GreyNavy

9.5 l

In stock

Shipping from £3.99

Estimated delivery: 3–5 working days

14-day right to cancel

£87.99

Grey / 9.5 l

Two drawers, one drawer's footprintThe drawers sit on top of each other – 38.5 cm tall, fits under most wall cupboards.
Four levels at onceRacks in both drawers: fries at the bottom, salmon on top, and the same in the other drawer.
Ready togetherSync starts the drawers so the main course and sides finish at once.
Meat the way you want itThe thermometer stops cooking when the meat reaches the temperature you chose.

For kitchens short on worktop

An ordinary two-drawer air fryer sits side by side. Double Stack sits on top of itself: the same 9.5 l split across two drawers, but on the footprint of one. It's 38.5 cm tall, so it fits under the wall cupboards and leaves the rest of the worktop free.

Cook on two levels in each drawer

Put potatoes or fries on the crisper plate, slide in the rack and put fish or chicken on top. Each drawer has its own heating element and fan, so the air reaches both levels. Only need a little food? Use one drawer.

The thermometer that stops in time

Insert the thermometer into the thickest part of the meat and choose the result you want, from medium to well done. The Smart Cook system tracks the temperature throughout and stops cooking when the meat is ready – no guessing.

Product reviews from other retailers

★★★★★4.2 out of 5 · 157 ratings on SharkNinja

These product reviews come from SharkNinja, not from purchases at Trovoras. We display selected 5-star reviews, translated where needed. The overall score and count are from the imported source and may have changed; use the source link to see all current reviews.

Read all reviews on SharkNinja ↗

★★★★★Would recommend
I had the original Ninja side-by-side air fryer, which was always good, especially for crisping, but it took up a lot of space. I needed an air fryer that used less space but still suited our large family, and this dual one was perfect. The trays are on top of one another, so it's half the size yet not too tall to fit under the cupboard. It also has the added bonus of a heat probe, conveniently tucked away but easily accessible when needed. It has a Match setting for both compartments, so no need to programme them separately – just consistent cooking. I've used other brands of air fryer in the past and none have the quality of a Ninja product. Build quality is better and heat is consistent.
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Sare · 21 September 2026
★★★★★Absolutely wonderful
Absolutely love it. The quality is great (as always). The dual cooker is a game changer, with so many settings to play with. My wife absolutely loves it. I would highly recommend it – if you're looking for a dual air fryer, this is it.
SW200477 · 14 October 2026
★★★★★Amazing
I bought this a few days ago as I wanted to upgrade my old air fryer. It was 4 litres and was great, but I hated having just the one drawer. I live on my own and I know this is for families, but I decided to treat myself. OMG! It is amazing, I absolutely love it. I usually only cook for one or two people at most, and this is great as I can cook the whole meal. So if you're thinking about it and think it's just for big families, I say go ahead – you will not be disappointed. I'm delighted with it. I honestly don't understand some of the bad reviews; I think they haven't read the instructions. I luv luv luv it. Tried one of the recipes – lovely. I'm like a kid with a new toy; to say I'm pleased with it is an understatement.
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#Aunty · 26 July 2025

Product FAQ

Will it fit under my wall cupboards?

It is 38.5 cm tall according to Ninja, which fits under most wall cupboards. Leave some space around and above the appliance when in use, and pull it forward if needed.

How much does it hold?

Two 4.75 l drawers, 9.5 l in total. According to Ninja, a whole 1.5 kg chicken fits in each drawer.

Do I have to use the racks?

No. Without the racks, the drawers work like an ordinary air fryer. Use the racks when you want to cook on two levels in the same drawer.

What is the difference between Sync and Match?

Sync makes two drawers with different settings finish at the same time. Match copies the settings from one drawer to the other.

What is the difference between the colours?

The functions are the same. According to Ninja, the Cyber Space edition also comes with an apron and silicone tongs.

How fast will it arrive, and can I change my mind?

Delivery options and times are on our Delivery page. You have a 14-day right to cancel. See our Returns page for conditions, return costs and your rights if an item is faulty.

Description

Two drawers stacked on top of each other instead of side by side. Double Stack takes up less worktop space than an ordinary two-drawer air fryer, and at 38.5 cm tall it fits under most wall cupboards.

Each drawer holds 4.75 l – according to Ninja a whole 1.5 kg chicken per drawer. Each drawer also has a rack that sits above the crisper plate so you can cook on two levels. With both drawers that's four levels: fries at the bottom, salmon on top, and vegetables and chicken in the other drawer.

The drawers are controlled separately with six modes – Air Fry, Max Crisp, Roast, Bake, Reheat and Dehydrate. Sync makes both finish together, and Match gives both the same settings.

This model also has the Smart Cook system with a digital thermometer. Insert it into the meat, choose how well done you want it, and the air fryer finishes cooking when the food is ready.

Drawers, crisper plates and racks are dishwasher safe. For anyone who wants to cook the whole dinner at once but is short on worktop space.

Features

Two stacked 4.75 l drawers – 9.5 l in total on one drawer's footprint
38.5 cm tall, fits under most wall cupboards
A rack in each drawer: cook on four levels at once
Six modes, Sync and Match
Smart Cook thermometer that stops when the meat is done

Specifications

Brand and model	Ninja Double Stack XL med Smart Cook, SL451EU / SL451EUCYD
Colour	Grey or Cyber Space
Capacity	9.5 l (two 4.75 l drawers)
Cooking modes	Air Fry, Max Crisp, Roast, Bake, Reheat, Dehydrate
Functions	Sync, Match, Smart Cook with thermometer
Power	2,470 W
Dimensions (H × W × D)	38.5 × 28 × 47 cm (manufacturer's figure)
Care	Drawers, crisper plates and racks are dishwasher safe
In the box	Air fryer, 2 non-stick 4.75 l drawers, 2 stackable racks, 2 crisper plates, recipe guide, digital thermometer
Cyber Space edition	According to Ninja, also comes with an apron and silicone tongs

Delivery and returns

Delivery is available to mainland Great Britain. See the Delivery page for excluded areas and the available services.

Standard delivery (tracked), 3–5 working days – £3.99
Express delivery, 1–2 working days – £6.99

You have a 14-day right to cancel from the day you receive your item. Contact us within 14 days if you want to cancel your order.

Warranty and complaints

Your goods are covered by the Consumer Rights Act 2015: they must be of satisfactory quality, fit for purpose and as described. If something is wrong with your item, contact our customer service and we will help you.

Contact customer service