Ninja has been quite active recently, launching several of their impressive Double Stack air fryers. The new 9.5-litre Double Stack XL had only just made its debut, and now they’ve rolled out three more at the IFA show. While these are destined for the UK market, it’s uncertain if those in the US will get their hands on them.
I casually strolled over for a peek, as is my custom. If you’re searching for the finest Ninja air fryers, don’t miss my *thorough* review of [Ninja’s top fryers](https://www.gadgetlad.co.uk/article/2299452/the-best-ninja-air-fryers-and-cookers.html) on GadgetLad. But for now, let’s dive into these exciting newcomers from IFA.
The Double Stack SL300

Emma Rowley / Foundry
First up is the SL300. This smaller unit has a capacity of 7.6 litres, making it a more compact alternative to the 9.5-litre giant. In terms of design, it resembles its larger counterpart, but it’s not as bulky, which is fantastic since that original model protrudes from your countertop like a sore thumb.
Each drawer holds 3.8 litres and features all the same functionalities as its larger sibling. You can prepare two different dishes simultaneously, then sync them for finishing at the same time—pretty clever.
Ninja suggests this can serve six people, but let’s be realistic—depends on what you’re preparing for them. That might be pushing it a bit, but the configuration does optimize space. You could fit a 1.2kg roast chicken or 400g of fries in there. Not too bad.
It comes in a stylish black finish, moving away from the typical dull grey. No details on price or release date just yet, but I promise to keep you posted when I find out more.
Final Thoughts On The SL300
Honestly, we’re fans of this compact marvel. Ninja has adapted the original to better suit smaller workspaces. If you’re tired of a kitchen that resembles a robot takeover, this could be the right choice.
The Double Stack XL with Smart Cook system

Emma Rowley / Foundry
Next in line is the SL451 Double Stack XL—retaining the same 9.5 litres of cooking space but with a shiny new cooking probe added. It’s as if Ninja is saying, “Some of you struggle with cooking meat perfectly, so let’s help you out.” Fair enough.
This cooking probe makes it perfect for those who throw in fresh meat or fish and want it cooked just right; for frozen items, just stick to the package instructions. This model maintains six cooking functions: air fry, max crisp, roast, bake, reheat, and dehydrate.
Once again, there’s no word on pricing or availability—because Ninja seems to enjoy keeping us in suspense.
Smart Cook System: Genius or Gimmick?
If you’re the type who always overcooks steak or undercooks chicken, this might be a lifesaver. But if you mostly cook frozen foods, this feature may just be an unnecessary extra.
Limited-edition white Double Stack XL

Emma Rowley / Foundry
Lastly, Ninja has also introduced a white variant of the original 9.5-litre Double Stack XL, but there’s a catch: it’s exclusively available at Currys. If you’ve got a pristine kitchen and don’t mind cleaning your appliances frequently, go for it. It looks attractive, but let’s face it—white shows every speck of dirt.
It’s expected to be priced similarly to the original (£229.99), so unless you’re devoted to cleaning or have a penchant for a sleek white look, just opt for the grey model. Less maintenance, same performance.
Is White The Right Choice?
Sure, it *appears* appealing, but it won’t stay that way for long. Stick with grey or black unless you’re inclined to wipe down your air fryer every day. You catch my drift.
Your Air Fryer Summary – “Hot Air, Bigger Claims”
In conclusion, Ninja has unveiled three new Double Stack air fryers, but only one truly lives up to the hype. The compact SL300 effectively addresses a common issue—fitting neatly on your countertop without protruding awkwardly.
The model featuring the cooking probe? Just a luxury for forgetful chefs. And the white version? It’ll dazzle until it’s blemished with grease.
Choose wisely, folks.

