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🔥 Cook smarter, not harder — double the capacity, half the hassle!
The Ninja Double Stack XL Air Fryer is a premium, space-saving vertical dual-drawer appliance with a massive 9.5L capacity that feeds up to 8 people. Featuring 4 cooking levels, 6 versatile functions, and energy-efficient technology that cooks up to 55% faster and uses 55% less energy than traditional ovens, it’s designed for busy professionals who demand speed, flexibility, and style in their kitchen. With dishwasher-safe parts and included silicone tongs, it combines convenience with high performance in a sleek black and copper finish.








| ASIN | B0CZXW5XR3 |
| Air Frying Technology | True |
| Best Sellers Rank | 1,533 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 5 in Air Fryers |
| Brand Name | Ninja |
| Capacity | 9.5 litres |
| Colour | Black/Copper |
| Control Method | Touch |
| Controller Type | Hand Control |
| Country of Origin | China |
| Customer Reviews | 4.7 out of 5 stars 3,147 Reviews |
| Has Nonstick Coating | Yes |
| Inner Material | Aluminum with non-stick coating |
| Is the item dishwasher safe? | Yes |
| Item Dimensions D x W x H | 47D x 28W x 38.5H centimetres |
| Item Type Name | Ninja Double Stack Air Fryer |
| Item Weight | 10.3 Kilograms |
| Manufacture Year | 2024 |
| Manufacturer | Ninja |
| Material | Aluminium , Plastic |
| Maximum Temperature Setting | 450 Degrees Fahrenheit |
| Model Name | Air Fryer |
| Model Number | SL400UKCP |
| Outer Material | Aluminium, Plastic |
| Output Wattage | 2470 Watts |
| Part Number | SL400UKCP |
| Product dimensions | 47D x 28W x 38.5H centimetres |
| Recommended Uses For Product | Air fry, roast, bake, reheat, dehydrate |
| Recommended uses for product | Air fry, roast, bake, reheat, dehydrate |
| Size | 9.5L |
| Special Features | 6 Cooking Functions, Air Fry, Max Crisp, Roast, Bake, Reheat & Dehydrate, 2 independent cooking zones, 2 racks, Dishwasher Safe Parts , Silicone Tongs |
| Special feature | 6 Cooking Functions, Air Fry, Max Crisp, Roast, Bake, Reheat & Dehydrate, 2 independent cooking zones, 2 racks, Dishwasher Safe Parts , Silicone Tongs Special feature 6 Cooking Functions, Air Fry, Max Crisp, Roast, Bake, Reheat & Dehydrate, 2 independent cooking zones, 2 racks, Dishwasher Safe Parts , Silicone Tongs See more |
| UPC | 622356295796 |
| Voltage | 240 Volts |
| Wattage | 2470 watts |
B**N
Very spacious, well built, and genuinely useful for cooking multiple dishes
I bought the Ninja Double Stack XL Air Fryer as a Christmas present for my mother, and it ended up being used heavily over the Christmas period, including for Christmas dinner itself. Build quality is excellent. It feels solid, well finished, and like a premium appliance rather than something flimsy or gimmicky. The vertical dual-drawer design works really well and saves counter space while still offering a lot of capacity. Space is a big highlight. It comfortably handled cooking multiple items at once, which was especially useful when preparing a large meal. Being able to run different settings in each drawer makes it far more flexible than a single-basket air fryer. The controls and presets are clear and easy to use, even for someone who isn’t particularly technical. Everything heats evenly, and results were consistently good across different foods. Overall, a high-quality, very practical air fryer that’s ideal for larger households or anyone who wants to cook more than one thing at a time. My mother loves it, and after seeing it used properly, it feels like a worthwhile upgrade over smaller models.
T**H
Ninja - Quality Cook
After having an Instant Vortex air fryer that was very good, I wanted a double stack, unfortunately Instant didn't do one, so I researched and decided to buy the Ninja SL300UK. I'm pleased I chose this model, its a great compact double stack air fryer, so far I cannot fault it, The air fryer function is good and so is the roast function. im very pleased with my purchase, its great, very easy to use, time takes a little longer than and its easy to clean. I would recommend the Ninja SL300, my only criticism is the cost of Ninja air fryers. There are better build quality air fryers out there with metal handles but the question is do they cook food as well as the Ninja, probably not, this is why NINJA are a safe choice, you know the cooking experience is excellent.
K**S
Game changer for quick, crispy meals
The Ninja Air Fryer XL works fast and cooks food evenly with a great crispy finish. The XL size is perfect for making larger portions, and it’s super easy to use. Cleanup is quick thanks to the nonstick basket. Solid quality and definitely worth the money. Highly recommend.
C**S
Brilliant for saving counter space, drawers a little tight ⭐⭐⭐⭐☆
We love this air fryer because it saves so much valuable space on the worktop compared to other double-drawer models. It cooks incredibly well, and the racks are very useful. The only downside we've found is that the drawers are a bit too small/narrow for larger items, so keep that in mind if you cook big portions. Overall, a fantastic, innovative product!
G**H
Good all round, compact air fryer
I’ve had this air fryer for quite a few months now and use it almost every day It fits nicely under the cupboards on the work top and is slim so it takes up very little room Anything you can do in a conventional oven or under a grill you can do in this air fryer. There are only two adults in our household and this air fryer is perfectly adequate for us. It claims to be able to cook enough food for 4-6 people. I think the maximum would be 4 but Ninja do make a bigger double stack so if your household is bigger you might want to consider the bigger one. It has two “zones” that work independently of each other so you can cook two different items at different temperatures at the same time. The sync function is very handy so both items will be done at the same time. Each zone has two positions - upper and lower - so as long as the two foods cook at the same temperature you can do them both in the same zone. It has different cooking methods Air fryer Max crisp Bake Roast Reheat Dehydrate Each one has a default temperature and cooking times but all of these, with the exception of Max crisp, can be altered. I have barely used my gas oven since I got this air fryer and will more than likely get rid of my old cooker and just get a gas hob. If you like baking it works well for that too. I don’t do a huge amount of baking but have made a sponge cake and scones which came out well. One thing to remember though is that both zones are quite small (just over 6 inches/15cm) so you might find your existing baking tins won’t fit in this. I’ve done a roast dinner in it and the chicken and roast potatoes came out really well. Again with its narrow design the maximum size chicken that will fit in it is 1.2 kg The instruction book is very good and comprehensive. It gives suggested temperatures and cooking times for most things and I’ve found these to be pretty accurate. It’s easy to clean but I would suggest buying some paper liners to help keep the basket clean. All in all a really good air fryer at a reasonable price
D**T
I love it!
I'm extremely happy with the Ninja Double Stack XL SL400UK Air Fryer. I've been using it for a few weeks, and it functions exactly as described, cooks food perfectly, is very well-made, and looks great! I wish that I'd bought a Ninja Air fryer sooner, as I previously had a supermarket branded one, with limited capacity. You definitely want a pair of silicone liners, and I went with the fantastic iStock AirFlow Pro™ Ninja SL400UK Silicone Liners (also bought from Amazon). Highly recommended!
D**R
Great air fryer
Brought this to replace my old ninja air fryer, that I have had for 8 years got the double stack XL so uses up less space, controls so easy to use love it so versatile and it was on special offer. Would recommend to anyone
M**N
Value for money
Fabulous air fryer fits under my kitchen units so compact no problem working on times but that’s to be expected with new air fryer
P**D
Produit superbe
Je vous le recommande ces un tres tres bon ninja il es trop bien et tres pratique
A**R
Kocherlebnis
Bin begeistert, ganz anderes kochen!
N**Z
item needs to be supplied with electrial complance in mind
appliance has been supplied with wrong power plug UK design not AUS appliance can not be used What do i do now please advise.
A**B
Great buy
Brilliant air fryer, couldn’t be without it. Looks great too
S**O
Not worth the money
Stopped working after 4 months, do not recommend
Trustpilot
2 weeks ago
2 months ago